[Zope-CMF] Is there a way to change the meta-type of a number of object types

[Norman Khine]

Hi,
I have over 300 Documents that are a document type, I have now created a new
type called Card which is based on the Document type, but this type only has
a number of Subject topics taken from the original Document type.

So now I want to take all Documents with the specific topics and make them
the new Card type.

I can create a Topic query which can list these items, but I don't think it
is possible to change them, or is it?

Where in the system, does an object stores these detail and can it be
changed?

Many thanks

Norman

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