scripts-blender/addons/asset_pipeline_2/transfer_functions.py

@@ -6,17 +6,20 @@ from . import asset_suffix
 def transfer_vertex_group(
     context,
     vertex_group_name: str,
-    obj_source: bpy.types.Object,
     obj_target: bpy.types.Object,
+    obj_source: bpy.types.Object,
 ):
-    if obj_source == obj_target:
+    if obj_target == obj_source:
         return
-    # TODO remove old vertex groups before transfer !!
-    obj_target.vertex_groups.active = obj_target.vertex_groups[vertex_group_name]
+
+    if obj_target.vertex_groups.get(vertex_group_name):
+        obj_target.vertex_groups.remove(obj_target.vertex_groups.get(vertex_group_name))
+
+    obj_source.vertex_groups.active = obj_source.vertex_groups[vertex_group_name]
     override = context.copy()
-    override["selected_editable_objects"] = [obj_source, obj_target]
-    override["active_object"] = obj_target
-    override["object"] = obj_target
+    override["selected_editable_objects"] = [obj_target, obj_source]
+    override["active_object"] = obj_source
+    override["object"] = obj_source
     with context.temp_override(**override):
         bpy.ops.object.data_transfer(
             data_type="VGROUP_WEIGHTS",

scripts-blender/addons/asset_pipeline_2/transferable_data.py

@@ -29,8 +29,8 @@ def apply_transfer_data(
                     transfer_functions.transfer_vertex_group(
                         context=context,
                         vertex_group_name=item.name,
-                        obj_source=target_obj,
-                        obj_target=item.id_data,
+                        obj_target=target_obj,
+                        obj_source=item.id_data,
                     )
                 if item.type == "MODIFIER":
                     transfer_functions.transfer_modifier(item, target_obj)