diff --git a/rsconcept/backend/apps/oss/models/OperationSchema.py b/rsconcept/backend/apps/oss/models/OperationSchema.py
index f10219e7..8a70446e 100644
--- a/rsconcept/backend/apps/oss/models/OperationSchema.py
+++ b/rsconcept/backend/apps/oss/models/OperationSchema.py
@@ -557,8 +557,7 @@ class OperationSchema:
             if old_data['term_forms'] == cst.term_forms:
                 new_data['term_forms'] = data['term_forms']
         if 'convention' in data:
-            if old_data['convention'] == cst.convention:
-                new_data['convention'] = data['convention']
+            new_data['convention'] = data['convention']
         if 'definition_formal' in data:
             new_data['definition_formal'] = replace_globals(data['definition_formal'], mapping)
         if 'term_raw' in data:
diff --git a/rsconcept/backend/apps/oss/tests/s_propagation/t_constituents.py b/rsconcept/backend/apps/oss/tests/s_propagation/t_constituents.py
index a7b9f559..6548096d 100644
--- a/rsconcept/backend/apps/oss/tests/s_propagation/t_constituents.py
+++ b/rsconcept/backend/apps/oss/tests/s_propagation/t_constituents.py
@@ -92,7 +92,8 @@ class TestChangeConstituents(EndpointTester):
             'item_data': {
                 'term_raw': 'Test1',
                 'definition_formal': r'X4\X4',
-                'definition_raw': '@{X5|sing,datv}'
+                'definition_raw': '@{X5|sing,datv}',
+                'convention': 'test'
             }
         }
         response = self.executeOK(data=data, schema=self.ks1.model.pk)
@@ -102,8 +103,10 @@ class TestChangeConstituents(EndpointTester):
         self.assertEqual(self.ks1X1.term_raw, data['item_data']['term_raw'])
         self.assertEqual(self.ks1X1.definition_formal, data['item_data']['definition_formal'])
         self.assertEqual(self.ks1X1.definition_raw, data['item_data']['definition_raw'])
+        self.assertEqual(self.ks1X1.convention, data['item_data']['convention'])
         self.assertEqual(d2.definition_resolved, data['item_data']['term_raw'])
         self.assertEqual(inherited_cst.term_raw, data['item_data']['term_raw'])
+        self.assertEqual(inherited_cst.convention, data['item_data']['convention'])
         self.assertEqual(inherited_cst.definition_formal, r'X1\X1')
         self.assertEqual(inherited_cst.definition_raw, r'@{X2|sing,datv}')
 
diff --git a/rsconcept/backend/apps/rsform/models/RSForm.py b/rsconcept/backend/apps/rsform/models/RSForm.py
index fc91786d..b3f75826 100644
--- a/rsconcept/backend/apps/rsform/models/RSForm.py
+++ b/rsconcept/backend/apps/rsform/models/RSForm.py
@@ -241,7 +241,11 @@ class RSForm:
         old_data = {}
         term_changed = False
         if 'convention' in data:
-            cst.convention = data['convention']
+            if cst.convention == data['convention']:
+                del data['convention']
+            else:
+                old_data['convention'] = cst.convention
+                cst.convention = data['convention']
         if 'definition_formal' in data:
             if cst.definition_formal == data['definition_formal']:
                 del data['definition_formal']