diff --git a/src/mesh/model/associations/Association.as b/src/mesh/model/associations/Association.as
index e02fbee..ef98cf3 100644
--- a/src/mesh/model/associations/Association.as
+++ b/src/mesh/model/associations/Association.as
@@ -49,7 +49,7 @@ package mesh.model.associations
 		 */
 		protected function associate(entity:Entity):void
 		{
-			if (owner.store && entity.store == null) owner.store.add(entity);
+			if (owner.store != null && entity.store == null) owner.store.add(entity);
 			_entities.add(entity);
 			populateInverseRelationship(entity);
 		}
diff --git a/src/mesh/model/associations/AssociationCollection.as b/src/mesh/model/associations/AssociationCollection.as
index c11a152..5989a0f 100644
--- a/src/mesh/model/associations/AssociationCollection.as
+++ b/src/mesh/model/associations/AssociationCollection.as
@@ -80,15 +80,11 @@ package mesh.model.associations
 		private function handleEntitiesReset():void
 		{
 			for each (var oldEntity:Entity in _snapshot) {
-				if (_list.getItemIndex(oldEntity) == -1) {
-					handleEntitiesRemoved([oldEntity]);
-				}
+				handleEntitiesRemoved([oldEntity]);
 			}
 			
 			for each (var newEntity:Entity in _list.toArray()) {
-				if (_snapshot.indexOf(newEntity) == -1) {
-					handleEntitiesAdded([newEntity]);
-				}
+				handleEntitiesAdded([newEntity]);
 			}
 		}