diff --git a/multi_user/bl_types/bl_collection.py b/multi_user/bl_types/bl_collection.py
index 75be16c..02cd23c 100644
--- a/multi_user/bl_types/bl_collection.py
+++ b/multi_user/bl_types/bl_collection.py
@@ -90,6 +90,7 @@ class BlCollection(ReplicatedDatablock):
     bl_check_common = True
     bl_reload_parent = False
 
+    use_delta = True
 
     @staticmethod
     def construct(data: dict) -> object:
diff --git a/multi_user/bl_types/bl_scene.py b/multi_user/bl_types/bl_scene.py
index afe28af..84ec09a 100644
--- a/multi_user/bl_types/bl_scene.py
+++ b/multi_user/bl_types/bl_scene.py
@@ -373,6 +373,7 @@ def load_sequence(sequence_data: dict,
 
 class BlScene(ReplicatedDatablock):
     is_root = True
+    use_delta = True
 
     bl_id = "scenes"
     bl_class = bpy.types.Scene
diff --git a/multi_user/libs/replication b/multi_user/libs/replication
index 9cd1f2e..dd15f6e 160000
--- a/multi_user/libs/replication
+++ b/multi_user/libs/replication
@@ -1 +1 @@
-Subproject commit 9cd1f2e43545708ffe879c7b53d6e32e90c258f9
+Subproject commit dd15f6eae0d0eb71e09bc76e837848c70c5357c0