Hello Zopistas! I have a product MyProduct with a zclass MyClass. I have many instances of MyClass. I decided to add Catalogue_aware base class to MyClass. Now when I create a instance of MyClass automatically add to my Catalog. Everythin ok. But. I thougt that now if I copy the instances I created before MyClass had Catalogue_aware has base class this instances would be added to my catalog. Wrong. Looks like the instances didnt inherited the adition of this new base class. Can I do any operation to this instances(objects) in order "for them to realize" they now have Catalogue_Aware as base class? Júlio ________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com