             case CollectionEventKind.MOVE: return dataProviderCollectionMove(event);
             case CollectionEventKind.REFRESH: return dataProviderCollectionRefresh(event);
             case CollectionEventKind.RESET: return dataProviderCollectionReset(event);
-            case CollectionEventKind.UPDATE: return dataProviderCollectionReplace(event); return true;
+            case CollectionEventKind.UPDATE: return true;
                 break;
         }
         


        return contentWidth;
    }
        
    /**
     *  Return the preferred bounds width of the grid's typicalItem when rendered with the item renderer 

            return;
        
        _columnCount = value;
        if (_columnCount == 0)
        {
            rowList.removeAll();
            recentNode = null;
            recentNode2 = null;
            return;
        }
        
        rowList.numColumns = value;        
        
        var i:int;
