[Zope] Items disappear from Catalog when updated

[Joel Burton]

I have a ZClass (JBook) which is CatalogAware as its first class
inheritance.

When JBooks are added, they are added to the Catalog (default name, root
level).

However, if I request an update, the books are removed. Only the documents
that were present when I did the last manual 'Find Objects' are kept.

Can anyone shed any light on this?

Many thanks,

-- 
Joel Burton   <jburton@scw.org>
Director of Information Systems, Support Center of Washington