diff --git a/cms/djangoapps/contentstore/utils.py b/cms/djangoapps/contentstore/utils.py
index d354d012dd3f..885e7848f04f 100644
--- a/cms/djangoapps/contentstore/utils.py
+++ b/cms/djangoapps/contentstore/utils.py
@@ -1051,12 +1051,11 @@ def duplicate_block(
         )
 
         children_handled = False
-        if hasattr(dest_block, "studio_post_duplicate"):
-            # Allow an XBlock to do anything fancy it may need to when duplicated from another block.
-            load_services_for_studio(source_item.runtime, user)
-            children_handled = dest_block.studio_post_duplicate(
-                store, source_item, store, user, duplication_function=duplicate_block, shallow=shallow
-            )
+        # Allow an XBlock to do anything fancy it may need to when duplicated from another block.
+        load_services_for_studio(source_item.runtime, user)
+        children_handled = dest_block.studio_post_duplicate(
+            store, source_item, store, user, duplication_function=duplicate_block, shallow=shallow
+        )
 
         if not children_handled:
             handle_children_duplication(
diff --git a/cms/djangoapps/contentstore/xblock_storage_handlers/view_handlers.py b/cms/djangoapps/contentstore/xblock_storage_handlers/view_handlers.py
index 10b2c85adcff..2896318ec7a5 100644
--- a/cms/djangoapps/contentstore/xblock_storage_handlers/view_handlers.py
+++ b/cms/djangoapps/contentstore/xblock_storage_handlers/view_handlers.py
@@ -818,12 +818,11 @@ def _duplicate_block(
         )
 
         children_handled = False
-        if hasattr(dest_block, "studio_post_duplicate"):
-            # Allow an XBlock to do anything fancy it may need to when duplicated from another block.
-            load_services_for_studio(source_item.runtime, user)
-            children_handled = dest_block.studio_post_duplicate(
-                source_item, store, user, duplication_function=_duplicate_block, shallow=False
-            )
+        # Allow an XBlock to do anything fancy it may need to when duplicated from another block.
+        load_services_for_studio(source_item.runtime, user)
+        children_handled = dest_block.studio_post_duplicate(
+            source_item, store, user, duplication_function=_duplicate_block, shallow=False
+        )
 
         if not children_handled:
             handle_children_duplication(
diff --git a/cms/envs/common.py b/cms/envs/common.py
index 11afd870a016..7525e5974a81 100644
--- a/cms/envs/common.py
+++ b/cms/envs/common.py
@@ -959,6 +959,7 @@
 # Import after sys.path fixup
 from xmodule.modulestore.inheritance import InheritanceMixin
 from xmodule.x_module import XModuleMixin
+from xmodule.studio_editable import StudioEditableBlock
 
 # These are the Mixins that should be added to every XBlock.
 # This should be moved into an XBlock Runtime/Application object
@@ -969,6 +970,7 @@
     XModuleMixin,
     EditInfoMixin,
     AuthoringMixin,
+    StudioEditableBlock,
 )
 XBLOCK_EXTRA_MIXINS = ()