[Zope] Changing Zclass Base Classes

[julio dinis]

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
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