diff --git a/rsconcept/frontend/src/features/help/items/help-rslang.tsx b/rsconcept/frontend/src/features/help/items/help-rslang.tsx
index 74acc476..3c07bda1 100644
--- a/rsconcept/frontend/src/features/help/items/help-rslang.tsx
+++ b/rsconcept/frontend/src/features/help/items/help-rslang.tsx
@@ -9,7 +9,7 @@ export function HelpRSLang() {
   return (
   <div className='flex flex-col gap-4'>
     <div className='dense'>
-      <h1>Родоструктурная экспликация концептуальных схем</h1>
+      <h1>Родоструктурная экспликация</h1>
       <p>Формальная запись (<i>экспликация</i>) концептуальных схем осуществляется с помощью языка родов структур.</p>
       <p>Для ознакомления с основами родов структур можно использовать следующие материалы:</p>
       <p>1. <BadgeVideo className='inline-icon' video={videos.explication} /> Видео: Краткое введение в мат. аппарат</p>
diff --git a/rsconcept/frontend/src/features/oss/dialogs/dlg-create-block/dlg-create-block.tsx b/rsconcept/frontend/src/features/oss/dialogs/dlg-create-block/dlg-create-block.tsx
index 148a51e3..7a81ae0c 100644
--- a/rsconcept/frontend/src/features/oss/dialogs/dlg-create-block/dlg-create-block.tsx
+++ b/rsconcept/frontend/src/features/oss/dialogs/dlg-create-block/dlg-create-block.tsx
@@ -10,18 +10,20 @@ import { ModalForm } from '@/components/modal';
 import { TabLabel, TabList, TabPanel, Tabs } from '@/components/tabs';
 import { useDialogsStore } from '@/stores/dialogs';
 
-import { type ICreateBlockDTO, schemaCreateBlock } from '../../backend/types';
+import { type ICreateBlockDTO, type IOssLayout, schemaCreateBlock } from '../../backend/types';
 import { useCreateBlock } from '../../backend/use-create-block';
-import { type IOssItem, NodeType } from '../../models/oss';
-import { type LayoutManager } from '../../models/oss-layout-api';
+import { useOssSuspense } from '../../backend/use-oss';
+import { LayoutManager } from '../../models/oss-layout-api';
 import { BLOCK_NODE_MIN_HEIGHT, BLOCK_NODE_MIN_WIDTH } from '../../pages/oss-page/editor-oss-graph/graph/block-node';
 
 import { TabBlockCard } from './tab-block-card';
 import { TabBlockChildren } from './tab-block-children';
 
 export interface DlgCreateBlockProps {
-  manager: LayoutManager;
-  initialChildren: IOssItem[];
+  ossID: number;
+  layout: IOssLayout;
+  childrenBlocks: number[];
+  childrenOperations: number[];
   initialParent: number | null;
   defaultX: number;
   defaultY: number;
@@ -37,9 +39,19 @@ export type TabID = (typeof TabID)[keyof typeof TabID];
 export function DlgCreateBlock() {
   const { createBlock } = useCreateBlock();
 
-  const { manager, initialChildren, initialParent, onCreate, defaultX, defaultY } = useDialogsStore(
-    state => state.props as DlgCreateBlockProps
-  );
+  const {
+    ossID, //
+    layout,
+    childrenBlocks,
+    childrenOperations,
+    initialParent,
+    onCreate,
+    defaultX,
+    defaultY
+  } = useDialogsStore(state => state.props as DlgCreateBlockProps);
+
+  const { schema } = useOssSuspense({ itemID: ossID });
+  const manager = new LayoutManager(schema, layout);
 
   const methods = useForm<ICreateBlockDTO>({
     resolver: zodResolver(schemaCreateBlock),
@@ -55,8 +67,8 @@ export function DlgCreateBlock() {
         width: BLOCK_NODE_MIN_WIDTH,
         height: BLOCK_NODE_MIN_HEIGHT
       },
-      children_blocks: initialChildren.filter(item => item.nodeType === NodeType.BLOCK).map(item => item.id),
-      children_operations: initialChildren.filter(item => item.nodeType === NodeType.OPERATION).map(item => item.id),
+      children_blocks: childrenBlocks,
+      children_operations: childrenOperations,
       layout: manager.layout
     },
     mode: 'onChange'
@@ -93,11 +105,11 @@ export function DlgCreateBlock() {
 
         <FormProvider {...methods}>
           <TabPanel>
-            <TabBlockCard />
+            <TabBlockCard oss={schema} />
           </TabPanel>
 
           <TabPanel>
-            <TabBlockChildren />
+            <TabBlockChildren oss={schema} />
           </TabPanel>
         </FormProvider>
       </Tabs>
diff --git a/rsconcept/frontend/src/features/oss/dialogs/dlg-create-block/tab-block-card.tsx b/rsconcept/frontend/src/features/oss/dialogs/dlg-create-block/tab-block-card.tsx
index f5f684c3..e7e86490 100644
--- a/rsconcept/frontend/src/features/oss/dialogs/dlg-create-block/tab-block-card.tsx
+++ b/rsconcept/frontend/src/features/oss/dialogs/dlg-create-block/tab-block-card.tsx
@@ -3,17 +3,17 @@
 import { Controller, useFormContext, useWatch } from 'react-hook-form';
 
 import { TextArea, TextInput } from '@/components/input';
-import { useDialogsStore } from '@/stores/dialogs';
 
 import { type ICreateBlockDTO } from '../../backend/types';
 import { SelectParent } from '../../components/select-parent';
-import { NodeType } from '../../models/oss';
+import { type IOperationSchema, NodeType } from '../../models/oss';
 import { constructNodeID } from '../../models/oss-api';
 
-import { type DlgCreateBlockProps } from './dlg-create-block';
+interface TabBlockCardProps {
+  oss: IOperationSchema;
+}
 
-export function TabBlockCard() {
-  const { manager } = useDialogsStore(state => state.props as DlgCreateBlockProps);
+export function TabBlockCard({ oss }: TabBlockCardProps) {
   const {
     register,
     control,
@@ -21,7 +21,7 @@ export function TabBlockCard() {
   } = useFormContext<ICreateBlockDTO>();
   const children_blocks = useWatch({ control, name: 'children_blocks' });
   const block_ids = children_blocks.map(id => constructNodeID(NodeType.BLOCK, id));
-  const all_children = [...block_ids, ...manager.oss.hierarchy.expandAllOutputs(block_ids)];
+  const all_children = [...block_ids, ...oss.hierarchy.expandAllOutputs(block_ids)];
 
   return (
     <div className='cc-fade-in cc-column'>
@@ -36,8 +36,8 @@ export function TabBlockCard() {
         control={control}
         render={({ field }) => (
           <SelectParent
-            items={manager.oss.blocks.filter(block => !all_children.includes(block.nodeID))}
-            value={field.value ? manager.oss.blockByID.get(field.value) ?? null : null}
+            items={oss.blocks.filter(block => !all_children.includes(block.nodeID))}
+            value={field.value ? oss.blockByID.get(field.value) ?? null : null}
             placeholder='Родительский блок'
             onChange={value => field.onChange(value ? value.id : null)}
           />
diff --git a/rsconcept/frontend/src/features/oss/dialogs/dlg-create-block/tab-block-children.tsx b/rsconcept/frontend/src/features/oss/dialogs/dlg-create-block/tab-block-children.tsx
index b350c678..f9ff102e 100644
--- a/rsconcept/frontend/src/features/oss/dialogs/dlg-create-block/tab-block-children.tsx
+++ b/rsconcept/frontend/src/features/oss/dialogs/dlg-create-block/tab-block-children.tsx
@@ -3,34 +3,34 @@
 import { useFormContext, useWatch } from 'react-hook-form';
 
 import { Label } from '@/components/input';
-import { useDialogsStore } from '@/stores/dialogs';
 
 import { type ICreateBlockDTO } from '../../backend/types';
 import { PickContents } from '../../components/pick-contents';
-import { type IOssItem, NodeType } from '../../models/oss';
+import { type IOperationSchema, type IOssItem, NodeType } from '../../models/oss';
 
-import { type DlgCreateBlockProps } from './dlg-create-block';
+interface TabBlockChildrenProps {
+  oss: IOperationSchema;
+}
 
-export function TabBlockChildren() {
+export function TabBlockChildren({ oss }: TabBlockChildrenProps) {
   const { setValue, control } = useFormContext<ICreateBlockDTO>();
-  const { manager } = useDialogsStore(state => state.props as DlgCreateBlockProps);
   const parent = useWatch({ control, name: 'item_data.parent' });
   const children_blocks = useWatch({ control, name: 'children_blocks' });
   const children_operations = useWatch({ control, name: 'children_operations' });
 
-  const parentItem = parent ? manager.oss.blockByID.get(parent) : null;
+  const parentItem = parent ? oss.blockByID.get(parent) : null;
   const internalBlocks = parentItem
-    ? manager.oss.hierarchy
+    ? oss.hierarchy
         .expandAllInputs([parentItem.nodeID])
-        .map(id => manager.oss.itemByNodeID.get(id))
+        .map(id => oss.itemByNodeID.get(id))
         .filter(item => item !== null && item?.nodeType === NodeType.BLOCK)
     : [];
 
   const exclude = parentItem ? [parentItem, ...internalBlocks] : [];
 
   const value = [
-    ...children_blocks.map(id => manager.oss.blockByID.get(id)!),
-    ...children_operations.map(id => manager.oss.operationByID.get(id)!)
+    ...children_blocks.map(id => oss.blockByID.get(id)!),
+    ...children_operations.map(id => oss.operationByID.get(id)!)
   ];
 
   function handleChangeSelected(newValue: IOssItem[]) {
@@ -50,7 +50,7 @@ export function TabBlockChildren() {
     <div className='cc-fade-in cc-column'>
       <Label text={`Выбор содержания: [ ${value.length} ]`} />
       <PickContents
-        schema={manager.oss}
+        schema={oss}
         exclude={exclude}
         value={value}
         onChange={newValue => handleChangeSelected(newValue)}
diff --git a/rsconcept/frontend/src/features/oss/dialogs/dlg-create-schema.tsx b/rsconcept/frontend/src/features/oss/dialogs/dlg-create-schema.tsx
index 144f9ca9..088401b6 100644
--- a/rsconcept/frontend/src/features/oss/dialogs/dlg-create-schema.tsx
+++ b/rsconcept/frontend/src/features/oss/dialogs/dlg-create-schema.tsx
@@ -9,13 +9,15 @@ import { TextArea, TextInput } from '@/components/input';
 import { ModalForm } from '@/components/modal';
 import { useDialogsStore } from '@/stores/dialogs';
 
-import { type ICreateSchemaDTO, schemaCreateSchema } from '../backend/types';
+import { type ICreateSchemaDTO, type IOssLayout, schemaCreateSchema } from '../backend/types';
 import { useCreateSchema } from '../backend/use-create-schema';
+import { useOssSuspense } from '../backend/use-oss';
 import { SelectParent } from '../components/select-parent';
-import { type LayoutManager, OPERATION_NODE_HEIGHT, OPERATION_NODE_WIDTH } from '../models/oss-layout-api';
+import { LayoutManager, OPERATION_NODE_HEIGHT, OPERATION_NODE_WIDTH } from '../models/oss-layout-api';
 
 export interface DlgCreateSchemaProps {
-  manager: LayoutManager;
+  ossID: number;
+  layout: IOssLayout;
   defaultX: number;
   defaultY: number;
   initialParent: number | null;
@@ -25,9 +27,17 @@ export interface DlgCreateSchemaProps {
 export function DlgCreateSchema() {
   const { createSchema } = useCreateSchema();
 
-  const { manager, initialParent, onCreate, defaultX, defaultY } = useDialogsStore(
-    state => state.props as DlgCreateSchemaProps
-  );
+  const {
+    ossID, //
+    layout,
+    initialParent,
+    onCreate,
+    defaultX,
+    defaultY
+  } = useDialogsStore(state => state.props as DlgCreateSchemaProps);
+
+  const { schema } = useOssSuspense({ itemID: ossID });
+  const manager = new LayoutManager(schema, layout);
 
   const {
     control,
diff --git a/rsconcept/frontend/src/features/oss/dialogs/dlg-create-synthesis/dlg-create-synthesis.tsx b/rsconcept/frontend/src/features/oss/dialogs/dlg-create-synthesis/dlg-create-synthesis.tsx
index 49cd98c4..c596df73 100644
--- a/rsconcept/frontend/src/features/oss/dialogs/dlg-create-synthesis/dlg-create-synthesis.tsx
+++ b/rsconcept/frontend/src/features/oss/dialogs/dlg-create-synthesis/dlg-create-synthesis.tsx
@@ -11,15 +11,17 @@ import { ModalForm } from '@/components/modal';
 import { TabLabel, TabList, TabPanel, Tabs } from '@/components/tabs';
 import { useDialogsStore } from '@/stores/dialogs';
 
-import { type ICreateSynthesisDTO, schemaCreateSynthesis } from '../../backend/types';
+import { type ICreateSynthesisDTO, type IOssLayout, schemaCreateSynthesis } from '../../backend/types';
 import { useCreateSynthesis } from '../../backend/use-create-synthesis';
-import { type LayoutManager, OPERATION_NODE_HEIGHT, OPERATION_NODE_WIDTH } from '../../models/oss-layout-api';
+import { useOssSuspense } from '../../backend/use-oss';
+import { LayoutManager, OPERATION_NODE_HEIGHT, OPERATION_NODE_WIDTH } from '../../models/oss-layout-api';
 
 import { TabArguments } from './tab-arguments';
 import { TabSubstitutions } from './tab-substitutions';
 
 export interface DlgCreateSynthesisProps {
-  manager: LayoutManager;
+  ossID: number;
+  layout: IOssLayout;
   initialParent: number | null;
   initialInputs: number[];
   defaultX: number;
@@ -36,9 +38,17 @@ export type TabID = (typeof TabID)[keyof typeof TabID];
 export function DlgCreateSynthesis() {
   const { createSynthesis } = useCreateSynthesis();
 
-  const { manager, initialInputs, initialParent, onCreate, defaultX, defaultY } = useDialogsStore(
-    state => state.props as DlgCreateSynthesisProps
-  );
+  const {
+    ossID, //
+    layout,
+    initialInputs,
+    initialParent,
+    onCreate,
+    defaultX,
+    defaultY
+  } = useDialogsStore(state => state.props as DlgCreateSynthesisProps);
+  const { schema } = useOssSuspense({ itemID: ossID });
+  const manager = new LayoutManager(schema, layout);
 
   const methods = useForm<ICreateSynthesisDTO>({
     resolver: zodResolver(schemaCreateSynthesis),
@@ -87,7 +97,7 @@ export function DlgCreateSynthesis() {
         </TabList>
         <FormProvider {...methods}>
           <TabPanel>
-            <TabArguments />
+            <TabArguments oss={schema} />
           </TabPanel>
           <TabPanel>
             <Suspense
@@ -97,7 +107,7 @@ export function DlgCreateSynthesis() {
                 </div>
               }
             >
-              <TabSubstitutions />
+              <TabSubstitutions oss={schema} />
             </Suspense>
           </TabPanel>
         </FormProvider>
diff --git a/rsconcept/frontend/src/features/oss/dialogs/dlg-create-synthesis/tab-arguments.tsx b/rsconcept/frontend/src/features/oss/dialogs/dlg-create-synthesis/tab-arguments.tsx
index 7ebe544c..0db304d4 100644
--- a/rsconcept/frontend/src/features/oss/dialogs/dlg-create-synthesis/tab-arguments.tsx
+++ b/rsconcept/frontend/src/features/oss/dialogs/dlg-create-synthesis/tab-arguments.tsx
@@ -3,16 +3,17 @@
 import { Controller, useFormContext, useWatch } from 'react-hook-form';
 
 import { Label, TextArea, TextInput } from '@/components/input';
-import { useDialogsStore } from '@/stores/dialogs';
 
 import { type ICreateSynthesisDTO } from '../../backend/types';
 import { PickMultiOperation } from '../../components/pick-multi-operation';
 import { SelectParent } from '../../components/select-parent';
+import { type IOperationSchema } from '../../models/oss';
 
-import { type DlgCreateSynthesisProps } from './dlg-create-synthesis';
+interface TabArgumentsProps {
+  oss: IOperationSchema;
+}
 
-export function TabArguments() {
-  const { manager } = useDialogsStore(state => state.props as DlgCreateSynthesisProps);
+export function TabArguments({ oss }: TabArgumentsProps) {
   const {
     register,
     control,
@@ -20,11 +21,11 @@ export function TabArguments() {
   } = useFormContext<ICreateSynthesisDTO>();
   const inputs = useWatch({ control, name: 'arguments' });
 
-  const replicas = manager.oss.replicas
+  const replicas = oss.replicas
     .filter(item => inputs.includes(item.original))
     .map(item => item.replica)
-    .concat(manager.oss.replicas.filter(item => inputs.includes(item.replica)).map(item => item.original));
-  const filtered = manager.oss.operations.filter(item => !replicas.includes(item.id));
+    .concat(oss.replicas.filter(item => inputs.includes(item.replica)).map(item => item.original));
+  const filtered = oss.operations.filter(item => !replicas.includes(item.id));
 
   return (
     <div className='cc-fade-in cc-column'>
@@ -48,8 +49,8 @@ export function TabArguments() {
             control={control}
             render={({ field }) => (
               <SelectParent
-                items={manager.oss.blocks}
-                value={field.value ? manager.oss.blockByID.get(field.value) ?? null : null}
+                items={oss.blocks}
+                value={field.value ? oss.blockByID.get(field.value) ?? null : null}
                 placeholder='Родительский блок'
                 onChange={value => field.onChange(value ? value.id : null)}
               />
diff --git a/rsconcept/frontend/src/features/oss/dialogs/dlg-create-synthesis/tab-substitutions.tsx b/rsconcept/frontend/src/features/oss/dialogs/dlg-create-synthesis/tab-substitutions.tsx
index cdc13f6d..341a2dce 100644
--- a/rsconcept/frontend/src/features/oss/dialogs/dlg-create-synthesis/tab-substitutions.tsx
+++ b/rsconcept/frontend/src/features/oss/dialogs/dlg-create-synthesis/tab-substitutions.tsx
@@ -6,21 +6,22 @@ import { useRSForms } from '@/features/rsform/backend/use-rsforms';
 import { PickSubstitutions } from '@/features/rsform/components/pick-substitutions';
 
 import { TextArea } from '@/components/input';
-import { useDialogsStore } from '@/stores/dialogs';
 
 import { type ICreateSynthesisDTO } from '../../backend/types';
+import { type IOperationSchema } from '../../models/oss';
 import { SubstitutionValidator } from '../../models/oss-api';
 
-import { type DlgCreateSynthesisProps } from './dlg-create-synthesis';
+interface TabSubstitutionsProps {
+  oss: IOperationSchema;
+}
 
-export function TabSubstitutions() {
-  const { manager } = useDialogsStore(state => state.props as DlgCreateSynthesisProps);
+export function TabSubstitutions({ oss }: TabSubstitutionsProps) {
   const { control } = useFormContext<ICreateSynthesisDTO>();
   const inputs = useWatch({ control, name: 'arguments' });
   const substitutions = useWatch({ control, name: 'substitutions' });
 
   const schemasIDs = inputs
-    .map(id => manager.oss.operationByID.get(id)!)
+    .map(id => oss.operationByID.get(id)!)
     .map(operation => operation.result)
     .filter(id => id !== null);
   const schemas = useRSForms(schemasIDs);
diff --git a/rsconcept/frontend/src/features/oss/dialogs/dlg-delete-operation.tsx b/rsconcept/frontend/src/features/oss/dialogs/dlg-delete-operation.tsx
index 489cedc3..d64d1d14 100644
--- a/rsconcept/frontend/src/features/oss/dialogs/dlg-delete-operation.tsx
+++ b/rsconcept/frontend/src/features/oss/dialogs/dlg-delete-operation.tsx
@@ -11,23 +11,26 @@ import { useDialogsStore } from '@/stores/dialogs';
 
 import { type IDeleteOperationDTO, type IOssLayout, OperationType, schemaDeleteOperation } from '../backend/types';
 import { useDeleteOperation } from '../backend/use-delete-operation';
-import { type IOperationInput, type IOperationSchema, type IOperationSynthesis } from '../models/oss';
+import { useOssSuspense } from '../backend/use-oss';
 
 export interface DlgDeleteOperationProps {
-  oss: IOperationSchema;
-  target: IOperationInput | IOperationSynthesis;
+  ossID: number;
+  targetID: number;
   layout: IOssLayout;
   beforeDelete?: () => void;
 }
 
 export function DlgDeleteOperation() {
-  const { oss, target, layout, beforeDelete } = useDialogsStore(state => state.props as DlgDeleteOperationProps);
+  const { ossID, targetID, layout, beforeDelete } = useDialogsStore(state => state.props as DlgDeleteOperationProps);
   const { deleteOperation } = useDeleteOperation();
 
+  const { schema } = useOssSuspense({ itemID: ossID });
+  const target = schema.operationByID.get(targetID)!;
+
   const { handleSubmit, control } = useForm<IDeleteOperationDTO>({
     resolver: zodResolver(schemaDeleteOperation),
     defaultValues: {
-      target: target.id,
+      target: targetID,
       layout: layout,
       keep_constituents: false,
       delete_schema: true
@@ -35,7 +38,7 @@ export function DlgDeleteOperation() {
   });
 
   function onSubmit(data: IDeleteOperationDTO) {
-    return deleteOperation({ itemID: oss.id, data: data, beforeUpdate: beforeDelete });
+    return deleteOperation({ itemID: ossID, data: data, beforeUpdate: beforeDelete });
   }
 
   return (
diff --git a/rsconcept/frontend/src/features/oss/dialogs/dlg-delete-replica.tsx b/rsconcept/frontend/src/features/oss/dialogs/dlg-delete-replica.tsx
index 6884d20a..f72b52c5 100644
--- a/rsconcept/frontend/src/features/oss/dialogs/dlg-delete-replica.tsx
+++ b/rsconcept/frontend/src/features/oss/dialogs/dlg-delete-replica.tsx
@@ -11,23 +11,26 @@ import { useDialogsStore } from '@/stores/dialogs';
 
 import { type IDeleteReplicaDTO, type IOssLayout, schemaDeleteReplica } from '../backend/types';
 import { useDeleteReplica } from '../backend/use-delete-replica';
-import { type IOperationReplica, type IOperationSchema } from '../models/oss';
+import { useOssSuspense } from '../backend/use-oss';
 
 export interface DlgDeleteReplicaProps {
-  oss: IOperationSchema;
-  target: IOperationReplica;
+  ossID: number;
+  targetID: number;
   layout: IOssLayout;
   beforeDelete?: () => void;
 }
 
 export function DlgDeleteReplica() {
-  const { oss, target, layout, beforeDelete } = useDialogsStore(state => state.props as DlgDeleteReplicaProps);
+  const { ossID, targetID, layout, beforeDelete } = useDialogsStore(state => state.props as DlgDeleteReplicaProps);
   const { deleteReplica: deleteReference } = useDeleteReplica();
 
+  const { schema } = useOssSuspense({ itemID: ossID });
+  const target = schema.operationByID.get(targetID)!;
+
   const { handleSubmit, control } = useForm<IDeleteReplicaDTO>({
     resolver: zodResolver(schemaDeleteReplica),
     defaultValues: {
-      target: target.id,
+      target: targetID,
       layout: layout,
       keep_constituents: false,
       keep_connections: false
@@ -36,7 +39,7 @@ export function DlgDeleteReplica() {
   const keep_connections = useWatch({ control, name: 'keep_connections' });
 
   function onSubmit(data: IDeleteReplicaDTO) {
-    return deleteReference({ itemID: oss.id, data: data, beforeUpdate: beforeDelete });
+    return deleteReference({ itemID: ossID, data: data, beforeUpdate: beforeDelete });
   }
 
   return (
diff --git a/rsconcept/frontend/src/features/oss/dialogs/dlg-edit-block.tsx b/rsconcept/frontend/src/features/oss/dialogs/dlg-edit-block.tsx
index 43c7b993..d57d13d2 100644
--- a/rsconcept/frontend/src/features/oss/dialogs/dlg-edit-block.tsx
+++ b/rsconcept/frontend/src/features/oss/dialogs/dlg-edit-block.tsx
@@ -9,20 +9,24 @@ import { TextArea, TextInput } from '@/components/input';
 import { ModalForm } from '@/components/modal';
 import { useDialogsStore } from '@/stores/dialogs';
 
-import { type IUpdateBlockDTO, schemaUpdateBlock } from '../backend/types';
+import { type IOssLayout, type IUpdateBlockDTO, schemaUpdateBlock } from '../backend/types';
+import { useOssSuspense } from '../backend/use-oss';
 import { useUpdateBlock } from '../backend/use-update-block';
 import { SelectParent } from '../components/select-parent';
-import { type IBlock } from '../models/oss';
-import { type LayoutManager } from '../models/oss-layout-api';
+import { LayoutManager } from '../models/oss-layout-api';
 
 export interface DlgEditBlockProps {
-  manager: LayoutManager;
-  target: IBlock;
+  ossID: number;
+  layout: IOssLayout;
+  targetID: number;
 }
 
 export function DlgEditBlock() {
-  const { manager, target } = useDialogsStore(state => state.props as DlgEditBlockProps);
+  const { ossID, targetID, layout } = useDialogsStore(state => state.props as DlgEditBlockProps);
   const { updateBlock } = useUpdateBlock();
+  const { schema } = useOssSuspense({ itemID: ossID });
+  const manager = new LayoutManager(schema, layout);
+  const target = manager.oss.blockByID.get(targetID)!;
 
   const {
     handleSubmit,
diff --git a/rsconcept/frontend/src/features/oss/dialogs/dlg-edit-operation/dlg-edit-operation.tsx b/rsconcept/frontend/src/features/oss/dialogs/dlg-edit-operation/dlg-edit-operation.tsx
index eaf4faec..e72ad07f 100644
--- a/rsconcept/frontend/src/features/oss/dialogs/dlg-edit-operation/dlg-edit-operation.tsx
+++ b/rsconcept/frontend/src/features/oss/dialogs/dlg-edit-operation/dlg-edit-operation.tsx
@@ -11,18 +11,19 @@ import { ModalForm } from '@/components/modal';
 import { TabLabel, TabList, TabPanel, Tabs } from '@/components/tabs';
 import { useDialogsStore } from '@/stores/dialogs';
 
-import { type IUpdateOperationDTO, OperationType, schemaUpdateOperation } from '../../backend/types';
+import { type IOssLayout, type IUpdateOperationDTO, OperationType, schemaUpdateOperation } from '../../backend/types';
+import { useOssSuspense } from '../../backend/use-oss';
 import { useUpdateOperation } from '../../backend/use-update-operation';
-import { type IOperationInput, type IOperationSynthesis } from '../../models/oss';
-import { type LayoutManager } from '../../models/oss-layout-api';
+import { LayoutManager } from '../../models/oss-layout-api';
 
 import { TabArguments } from './tab-arguments';
 import { TabOperation } from './tab-operation';
 import { TabSubstitutions } from './tab-substitutions';
 
 export interface DlgEditOperationProps {
-  manager: LayoutManager;
-  target: IOperationInput | IOperationSynthesis;
+  ossID: number;
+  layout: IOssLayout;
+  targetID: number;
 }
 
 export const TabID = {
@@ -33,13 +34,17 @@ export const TabID = {
 export type TabID = (typeof TabID)[keyof typeof TabID];
 
 export function DlgEditOperation() {
-  const { manager, target } = useDialogsStore(state => state.props as DlgEditOperationProps);
+  const { ossID, layout, targetID } = useDialogsStore(state => state.props as DlgEditOperationProps);
   const { updateOperation } = useUpdateOperation();
 
+  const { schema } = useOssSuspense({ itemID: ossID });
+  const manager = new LayoutManager(schema, layout);
+  const target = manager.oss.operationByID.get(targetID)!;
+
   const methods = useForm<IUpdateOperationDTO>({
     resolver: zodResolver(schemaUpdateOperation),
     defaultValues: {
-      target: target.id,
+      target: targetID,
       item_data: {
         alias: target.alias,
         title: target.title,
@@ -101,15 +106,17 @@ export function DlgEditOperation() {
 
         <FormProvider {...methods}>
           <TabPanel>
-            <TabOperation />
+            <TabOperation oss={schema} />
           </TabPanel>
 
-          <TabPanel>{target.operation_type === OperationType.SYNTHESIS ? <TabArguments /> : null}</TabPanel>
+          <TabPanel>
+            {target.operation_type === OperationType.SYNTHESIS ? <TabArguments oss={schema} target={target} /> : null}
+          </TabPanel>
 
           <TabPanel>
             {target.operation_type === OperationType.SYNTHESIS ? (
               <Suspense fallback={<Loader />}>
-                <TabSubstitutions />
+                <TabSubstitutions oss={schema} />
               </Suspense>
             ) : null}
           </TabPanel>
diff --git a/rsconcept/frontend/src/features/oss/dialogs/dlg-edit-operation/tab-arguments.tsx b/rsconcept/frontend/src/features/oss/dialogs/dlg-edit-operation/tab-arguments.tsx
index 3155c02a..20f05a85 100644
--- a/rsconcept/frontend/src/features/oss/dialogs/dlg-edit-operation/tab-arguments.tsx
+++ b/rsconcept/frontend/src/features/oss/dialogs/dlg-edit-operation/tab-arguments.tsx
@@ -3,24 +3,26 @@
 import { Controller, useFormContext, useWatch } from 'react-hook-form';
 
 import { Label } from '@/components/input';
-import { useDialogsStore } from '@/stores/dialogs';
 
 import { type IUpdateOperationDTO } from '../../backend/types';
 import { PickMultiOperation } from '../../components/pick-multi-operation';
+import { type IOperationInput, type IOperationSchema, type IOperationSynthesis } from '../../models/oss';
 
-import { type DlgEditOperationProps } from './dlg-edit-operation';
+interface TabArgumentsProps {
+  oss: IOperationSchema;
+  target: IOperationInput | IOperationSynthesis;
+}
 
-export function TabArguments() {
+export function TabArguments({ oss, target }: TabArgumentsProps) {
   const { control, setValue } = useFormContext<IUpdateOperationDTO>();
-  const { manager, target } = useDialogsStore(state => state.props as DlgEditOperationProps);
   const args = useWatch({ control, name: 'arguments' });
 
-  const replicas = manager.oss.replicas
+  const replicas = oss.replicas
     .filter(item => args.includes(item.original) || item.original === target.id)
     .map(item => item.replica)
-    .concat(manager.oss.replicas.filter(item => args.includes(item.replica)).map(item => item.original));
-  const potentialCycle = [target.id, ...replicas, ...manager.oss.graph.expandAllOutputs([target.id])];
-  const filtered = manager.oss.operations.filter(item => !potentialCycle.includes(item.id));
+    .concat(oss.replicas.filter(item => args.includes(item.replica)).map(item => item.original));
+  const potentialCycle = [target.id, ...replicas, ...oss.graph.expandAllOutputs([target.id])];
+  const filtered = oss.operations.filter(item => !potentialCycle.includes(item.id));
 
   function handleChangeArguments(prev: number[], newValue: number[]) {
     setValue('arguments', newValue, { shouldValidate: true });
diff --git a/rsconcept/frontend/src/features/oss/dialogs/dlg-edit-operation/tab-operation.tsx b/rsconcept/frontend/src/features/oss/dialogs/dlg-edit-operation/tab-operation.tsx
index d62b8b64..5c5d5657 100644
--- a/rsconcept/frontend/src/features/oss/dialogs/dlg-edit-operation/tab-operation.tsx
+++ b/rsconcept/frontend/src/features/oss/dialogs/dlg-edit-operation/tab-operation.tsx
@@ -1,15 +1,16 @@
 import { Controller, useFormContext } from 'react-hook-form';
 
 import { TextArea, TextInput } from '@/components/input';
-import { useDialogsStore } from '@/stores/dialogs';
 
 import { type IUpdateOperationDTO } from '../../backend/types';
 import { SelectParent } from '../../components/select-parent';
+import { type IOperationSchema } from '../../models/oss';
 
-import { type DlgEditOperationProps } from './dlg-edit-operation';
+interface TabOperationProps {
+  oss: IOperationSchema;
+}
 
-export function TabOperation() {
-  const { manager } = useDialogsStore(state => state.props as DlgEditOperationProps);
+export function TabOperation({ oss }: TabOperationProps) {
   const {
     register,
     control,
@@ -37,8 +38,8 @@ export function TabOperation() {
         control={control}
         render={({ field }) => (
           <SelectParent
-            items={manager.oss.blocks}
-            value={field.value ? manager.oss.blockByID.get(field.value) ?? null : null}
+            items={oss.blocks}
+            value={field.value ? oss.blockByID.get(field.value) ?? null : null}
             placeholder='Родительский блок'
             onChange={value => field.onChange(value ? value.id : null)}
           />
diff --git a/rsconcept/frontend/src/features/oss/dialogs/dlg-edit-operation/tab-substitutions.tsx b/rsconcept/frontend/src/features/oss/dialogs/dlg-edit-operation/tab-substitutions.tsx
index 127aabcd..599a098d 100644
--- a/rsconcept/frontend/src/features/oss/dialogs/dlg-edit-operation/tab-substitutions.tsx
+++ b/rsconcept/frontend/src/features/oss/dialogs/dlg-edit-operation/tab-substitutions.tsx
@@ -6,21 +6,22 @@ import { useRSForms } from '@/features/rsform/backend/use-rsforms';
 import { PickSubstitutions } from '@/features/rsform/components/pick-substitutions';
 
 import { TextArea } from '@/components/input';
-import { useDialogsStore } from '@/stores/dialogs';
 
 import { type IUpdateOperationDTO } from '../../backend/types';
+import { type IOperationSchema } from '../../models/oss';
 import { SubstitutionValidator } from '../../models/oss-api';
 
-import { type DlgEditOperationProps } from './dlg-edit-operation';
+interface TabSubstitutionsProps {
+  oss: IOperationSchema;
+}
 
-export function TabSubstitutions() {
-  const { manager } = useDialogsStore(state => state.props as DlgEditOperationProps);
+export function TabSubstitutions({ oss }: TabSubstitutionsProps) {
   const { control } = useFormContext<IUpdateOperationDTO>();
   const inputs = useWatch({ control, name: 'arguments' });
   const substitutions = useWatch({ control, name: 'substitutions' });
 
   const schemasIDs = inputs
-    .map(id => manager.oss.operationByID.get(id)!)
+    .map(id => oss.operationByID.get(id)!)
     .map(operation => operation.result)
     .filter(id => id !== null);
   const schemas = useRSForms(schemasIDs);
diff --git a/rsconcept/frontend/src/features/oss/dialogs/dlg-import-schema.tsx b/rsconcept/frontend/src/features/oss/dialogs/dlg-import-schema.tsx
index 0fdea63a..8a2ff46b 100644
--- a/rsconcept/frontend/src/features/oss/dialogs/dlg-import-schema.tsx
+++ b/rsconcept/frontend/src/features/oss/dialogs/dlg-import-schema.tsx
@@ -12,14 +12,16 @@ import { Checkbox, TextArea, TextInput } from '@/components/input';
 import { ModalForm } from '@/components/modal';
 import { useDialogsStore } from '@/stores/dialogs';
 
-import { type IImportSchemaDTO, schemaImportSchema } from '../backend/types';
+import { type IImportSchemaDTO, type IOssLayout, schemaImportSchema } from '../backend/types';
 import { useImportSchema } from '../backend/use-import-schema';
+import { useOssSuspense } from '../backend/use-oss';
 import { SelectParent } from '../components/select-parent';
 import { sortItemsForOSS } from '../models/oss-api';
-import { type LayoutManager, OPERATION_NODE_HEIGHT, OPERATION_NODE_WIDTH } from '../models/oss-layout-api';
+import { LayoutManager, OPERATION_NODE_HEIGHT, OPERATION_NODE_WIDTH } from '../models/oss-layout-api';
 
 export interface DlgImportSchemaProps {
-  manager: LayoutManager;
+  ossID: number;
+  layout: IOssLayout;
   defaultX: number;
   defaultY: number;
   initialParent: number | null;
@@ -29,9 +31,16 @@ export interface DlgImportSchemaProps {
 export function DlgImportSchema() {
   const { importSchema } = useImportSchema();
 
-  const { manager, initialParent, onCreate, defaultX, defaultY } = useDialogsStore(
-    state => state.props as DlgImportSchemaProps
-  );
+  const {
+    ossID, //
+    layout,
+    initialParent,
+    onCreate,
+    defaultX,
+    defaultY
+  } = useDialogsStore(state => state.props as DlgImportSchemaProps);
+  const { schema } = useOssSuspense({ itemID: ossID });
+  const manager = new LayoutManager(schema, layout);
   const { items: libraryItems } = useLibrary();
   const sortedItems = sortItemsForOSS(manager.oss, libraryItems);
 
diff --git a/rsconcept/frontend/src/features/oss/dialogs/dlg-relocate-constituents.tsx b/rsconcept/frontend/src/features/oss/dialogs/dlg-relocate-constituents.tsx
index 82c903de..9af74fe9 100644
--- a/rsconcept/frontend/src/features/oss/dialogs/dlg-relocate-constituents.tsx
+++ b/rsconcept/frontend/src/features/oss/dialogs/dlg-relocate-constituents.tsx
@@ -17,24 +17,27 @@ import { ModalForm } from '@/components/modal';
 import { useDialogsStore } from '@/stores/dialogs';
 
 import { type IOssLayout, type IRelocateConstituentsDTO, schemaRelocateConstituents } from '../backend/types';
+import { useOssSuspense } from '../backend/use-oss';
 import { useRelocateConstituents } from '../backend/use-relocate-constituents';
 import { useUpdateLayout } from '../backend/use-update-layout';
 import { IconRelocationUp } from '../components/icon-relocation-up';
-import { type IOperation, type IOperationSchema } from '../models/oss';
 import { getRelocateCandidates } from '../models/oss-api';
 
 export interface DlgRelocateConstituentsProps {
-  oss: IOperationSchema;
-  initialTarget?: IOperation;
+  ossID: number;
+  targetID?: number;
   layout?: IOssLayout;
 }
 
 export function DlgRelocateConstituents() {
-  const { oss, initialTarget, layout } = useDialogsStore(state => state.props as DlgRelocateConstituentsProps);
+  const { ossID, targetID, layout } = useDialogsStore(state => state.props as DlgRelocateConstituentsProps);
   const { items: libraryItems } = useLibrary();
   const { updateLayout: updatePositions } = useUpdateLayout();
   const { relocateConstituents } = useRelocateConstituents();
 
+  const { schema: oss } = useOssSuspense({ itemID: ossID });
+  const initialTarget = targetID ? oss.operationByID.get(targetID)! : undefined;
+
   const { handleSubmit, control, setValue } = useForm<IRelocateConstituentsDTO>({
     resolver: zodResolver(schemaRelocateConstituents),
     defaultValues: {
diff --git a/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/context-menu/menu-block.tsx b/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/context-menu/menu-block.tsx
index 6b23f110..df561c34 100644
--- a/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/context-menu/menu-block.tsx
+++ b/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/context-menu/menu-block.tsx
@@ -7,7 +7,6 @@ import { useDialogsStore } from '@/stores/dialogs';
 import { useDeleteBlock } from '../../../../backend/use-delete-block';
 import { useMutatingOss } from '../../../../backend/use-mutating-oss';
 import { type IBlock } from '../../../../models/oss';
-import { LayoutManager } from '../../../../models/oss-layout-api';
 import { useOssEdit } from '../../oss-edit-context';
 import { useGetLayout } from '../use-get-layout';
 
@@ -30,8 +29,9 @@ export function MenuBlock({ block, onHide }: MenuBlockProps) {
     }
     onHide();
     showEditBlock({
-      manager: new LayoutManager(schema, getLayout()),
-      target: block
+      layout: getLayout(),
+      ossID: schema.id,
+      targetID: block.id
     });
   }
 
diff --git a/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/context-menu/menu-operation.tsx b/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/context-menu/menu-operation.tsx
index 0b43f5f1..edda0bcf 100644
--- a/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/context-menu/menu-operation.tsx
+++ b/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/context-menu/menu-operation.tsx
@@ -101,8 +101,9 @@ export function MenuOperation({ operation, onHide }: MenuOperationProps) {
     }
     onHide();
     showEditOperation({
-      manager: new LayoutManager(schema, getLayout()),
-      target: operation
+      layout: getLayout(),
+      ossID: schema.id,
+      targetID: operation.id
     });
   }
 
@@ -114,8 +115,8 @@ export function MenuOperation({ operation, onHide }: MenuOperationProps) {
     switch (operation.operation_type) {
       case OperationType.REPLICA:
         showDeleteReference({
-          oss: schema,
-          target: operation,
+          ossID: schema.id,
+          targetID: operation.id,
           layout: getLayout(),
           beforeDelete: deselectAll
         });
@@ -123,8 +124,8 @@ export function MenuOperation({ operation, onHide }: MenuOperationProps) {
       case OperationType.INPUT:
       case OperationType.SYNTHESIS:
         showDeleteOperation({
-          oss: schema,
-          target: operation,
+          ossID: schema.id,
+          targetID: operation.id,
           layout: getLayout(),
           beforeDelete: deselectAll
         });
@@ -163,8 +164,8 @@ export function MenuOperation({ operation, onHide }: MenuOperationProps) {
     }
     onHide();
     showRelocateConstituents({
-      oss: schema,
-      initialTarget: operation,
+      ossID: schema.id,
+      targetID: operation.id,
       layout: getLayout()
     });
   }
diff --git a/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/oss-flow.tsx b/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/oss-flow.tsx
index a7146e98..6bf619b1 100644
--- a/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/oss-flow.tsx
+++ b/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/oss-flow.tsx
@@ -73,7 +73,7 @@ export function OssFlow() {
 
   const [mouseCoords, setMouseCoords] = useState<Position2D>({ x: 0, y: 0 });
 
-  const showCreateOperation = useDialogsStore(state => state.showCreateOperation);
+  const showCreateOperation = useDialogsStore(state => state.showCreateSynthesis);
   const showCreateBlock = useDialogsStore(state => state.showCreateBlock);
   const showCreateSchema = useDialogsStore(state => state.showCreateSchema);
   const showDeleteOperation = useDialogsStore(state => state.showDeleteOperation);
@@ -91,7 +91,8 @@ export function OssFlow() {
   function handleCreateSynthesis() {
     const targetPosition = screenToFlowPosition({ x: window.innerWidth / 2, y: window.innerHeight / 2 });
     showCreateOperation({
-      manager: new LayoutManager(schema, getLayout()),
+      ossID: schema.id,
+      layout: getLayout(),
       defaultX: targetPosition.x,
       defaultY: targetPosition.y,
       initialInputs: selectedItems.filter(item => item?.nodeType === NodeType.OPERATION).map(item => item.id),
@@ -106,12 +107,18 @@ export function OssFlow() {
   function handleCreateBlock() {
     const targetPosition = screenToFlowPosition({ x: window.innerWidth / 2, y: window.innerHeight / 2 });
     const parent = extractBlockParent(selectedItems);
+    const needChildren = parent === null || selectedItems.length !== 1 || parent !== selectedItems[0].id;
     showCreateBlock({
-      manager: new LayoutManager(schema, getLayout()),
+      ossID: schema.id,
+      layout: getLayout(),
       defaultX: targetPosition.x,
       defaultY: targetPosition.y,
-      initialChildren:
-        parent !== null && selectedItems.length === 1 && parent === selectedItems[0].id ? [] : selectedItems,
+      childrenBlocks: !needChildren
+        ? []
+        : selectedItems.filter(item => item.nodeType === NodeType.BLOCK).map(item => item.id),
+      childrenOperations: !needChildren
+        ? []
+        : selectedItems.filter(item => item.nodeType === NodeType.OPERATION).map(item => item.id),
       initialParent: parent,
       onCreate: newID => {
         resetView();
@@ -123,7 +130,8 @@ export function OssFlow() {
   function handleCreateSchema() {
     const targetPosition = screenToFlowPosition({ x: window.innerWidth / 2, y: window.innerHeight / 2 });
     showCreateSchema({
-      manager: new LayoutManager(schema, getLayout()),
+      ossID: schema.id,
+      layout: getLayout(),
       defaultX: targetPosition.x,
       defaultY: targetPosition.y,
       initialParent: extractBlockParent(selectedItems),
@@ -137,7 +145,8 @@ export function OssFlow() {
   function handleImportSchema() {
     const targetPosition = screenToFlowPosition({ x: window.innerWidth / 2, y: window.innerHeight / 2 });
     showImportSchema({
-      manager: new LayoutManager(schema, getLayout()),
+      ossID: schema.id,
+      layout: getLayout(),
       defaultX: targetPosition.x,
       defaultY: targetPosition.y,
       initialParent: extractBlockParent(selectedItems),
@@ -163,8 +172,8 @@ export function OssFlow() {
       switch (item.operation_type) {
         case OperationType.REPLICA:
           showDeleteReference({
-            oss: schema,
-            target: item,
+            ossID: schema.id,
+            targetID: item.id,
             layout: getLayout(),
             beforeDelete: deselectAll
           });
@@ -172,8 +181,8 @@ export function OssFlow() {
         case OperationType.INPUT:
         case OperationType.SYNTHESIS:
           showDeleteOperation({
-            oss: schema,
-            target: item,
+            ossID: schema.id,
+            targetID: item.id,
             layout: getLayout(),
             beforeDelete: deselectAll
           });
@@ -198,8 +207,9 @@ export function OssFlow() {
       const block = schema.blockByID.get(-Number(node.id));
       if (block) {
         showEditBlock({
-          manager: new LayoutManager(schema, getLayout()),
-          target: block
+          ossID: schema.id,
+          layout: getLayout(),
+          targetID: block.id
         });
       }
     } else {
diff --git a/rsconcept/frontend/src/stores/dialogs.ts b/rsconcept/frontend/src/stores/dialogs.ts
index 30be21a3..d6d98935 100644
--- a/rsconcept/frontend/src/stores/dialogs.ts
+++ b/rsconcept/frontend/src/stores/dialogs.ts
@@ -93,7 +93,7 @@ interface DialogsStore {
   showCstTemplate: (props: DlgCstTemplateProps) => void;
   showCreateCst: (props: DlgCreateCstProps) => void;
   showCreateBlock: (props: DlgCreateBlockProps) => void;
-  showCreateOperation: (props: DlgCreateSynthesisProps) => void;
+  showCreateSynthesis: (props: DlgCreateSynthesisProps) => void;
   showDeleteCst: (props: DlgDeleteCstProps) => void;
   showEditEditors: (props: DlgEditEditorsProps) => void;
   showEditOperation: (props: DlgEditOperationProps) => void;
@@ -138,7 +138,7 @@ export const useDialogsStore = create<DialogsStore>()(set => ({
   showVideo: props => set({ active: DialogType.SHOW_VIDEO, props: props }),
   showCstTemplate: props => set({ active: DialogType.CONSTITUENTA_TEMPLATE, props: props }),
   showCreateCst: props => set({ active: DialogType.CREATE_CONSTITUENTA, props: props }),
-  showCreateOperation: props => set({ active: DialogType.CREATE_SYNTHESIS, props: props }),
+  showCreateSynthesis: props => set({ active: DialogType.CREATE_SYNTHESIS, props: props }),
   showCreateBlock: props => set({ active: DialogType.CREATE_BLOCK, props: props }),
   showDeleteCst: props => set({ active: DialogType.DELETE_CONSTITUENTA, props: props }),
   showEditEditors: props => set({ active: DialogType.EDIT_EDITORS, props: props }),