scripts-blender/addons/blender_kitsu/anim/ops.py

@@ -369,6 +369,10 @@ class KITSU_OT_anim_update_output_coll(bpy.types.Operator):
         missing: List[bpy.types.Collection] = []
         output_coll_childs = list(opsdata.traverse_collection_tree(output_coll))
 
+        # Clear Out Output Collection before Starting
+        for collection in output_coll.children:
+            output_coll.children.unlink(collection)
+
         # Check if all found asset colls are in output coll.
         for coll in asset_colls:
             if coll in output_coll_childs: