diff --git a/multi_user/bl_types/bl_datablock.py b/multi_user/bl_types/bl_datablock.py
index 78a9844..7cdb2d1 100644
--- a/multi_user/bl_types/bl_datablock.py
+++ b/multi_user/bl_types/bl_datablock.py
@@ -133,17 +133,21 @@ class BlDatablock(ReplicatedDatablock):
         if not datablock_ref:
             try:
                 datablock_ref = datablock_root[self.data['name']]
-            except KeyError as e:
-                if construct:
-                    name = self.data.get('name')
-                    logging.debug(f"Constructing {name}")
-                    datablock_ref = self._construct(data=self.data)
-                    setattr(datablock_ref, 'uuid', self.uuid)
-                else:
-                    return False
-        self.instance = datablock_ref
-        return True
+            except Exception:
+                pass
 
+            if construct and not datablock_ref:
+                name = self.data.get('name')
+                logging.debug(f"Constructing {name}")
+                datablock_ref = self._construct(data=self.data)
+
+        if datablock_ref is not None:
+            setattr(datablock_ref, 'uuid', self.uuid)
+            self.instance = datablock_ref
+            return True
+        else:
+            return False
+        
 
     def remove_instance(self):
         """
diff --git a/multi_user/operators.py b/multi_user/operators.py
index b624676..f49b94a 100644
--- a/multi_user/operators.py
+++ b/multi_user/operators.py
@@ -946,8 +946,7 @@ def sanitize_deps_graph(remove_nodes: bool = False):
                         rm_cpt += 1
                     except NonAuthorizedOperationError:
                         continue
-        if rm_cpt:
-            logging.info(f"Sanitize took { utils.current_milli_time()-start} ms, removed {rm_cpt} nodes")
+        logging.info(f"Sanitize took { utils.current_milli_time()-start} ms, removed {rm_cpt} nodes")
 
 
 @persistent
@@ -1014,15 +1013,14 @@ def depsgraph_evaluation(scene):
             # A new scene is created 
             elif isinstance(update.id, bpy.types.Scene):
                 ref = session.repository.get_node_by_datablock(update.id)
-                if ref and ref.resolve(construct=False):
-                    sanitize_deps_graph(remove_nodes=True)
+                if ref:
+                    ref.resolve()
                 else:
                     scn_uuid = porcelain.add(session.repository, update.id)
                     porcelain.commit(session.node_id, scn_uuid)
                     session.push(scn_uuid, check_data=False)
-            if isinstance(update.id, bpy.types.Collection):
-                sanitize_deps_graph(remove_nodes=True)
-
+            elif isinstance(update.id, bpy.types.Collection):
+                sanitize_deps_graph()
 def register():
     from bpy.utils import register_class
 
diff --git a/multi_user/timers.py b/multi_user/timers.py
index d088a77..f414a2e 100644
--- a/multi_user/timers.py
+++ b/multi_user/timers.py
@@ -248,7 +248,7 @@ class DynamicRightSelectTimer(Timer):
                                     key,
                                     RP_COMMON,
                                     ignore_warnings=True,
-                                    affect_dependencies=True)
+                                    affect_dependencies=recursive)
                             except NonAuthorizedOperationError:
                                 logging.warning(
                                     f"Not authorized to change {key} owner")