diff --git a/multi_user/bl_types/bl_object.py b/multi_user/bl_types/bl_object.py
index ca3d693..dbd2ce1 100644
--- a/multi_user/bl_types/bl_object.py
+++ b/multi_user/bl_types/bl_object.py
@@ -304,6 +304,7 @@ class BlObject(BlDatablock):
 
         # CONSTRAINTS
         if hasattr(instance, 'constraints'):
+            dumper.include_filter = None
             dumper.depth = 3
             data["constraints"] = dumper.dump(instance.constraints)