[Zope-CMF] second portal catalog, for published items only

[Colin Leath]

I'm about to add a second catalog to my CMF for the purpose of segregating
published items from all the rest--
allowing listUnique() to return the subset of data I desire.

Is there a better way of achieving this?
(since it seems I can't just cut and paste the portal_catalog- I have to
re-add all the indexes and metadata I want)

I realize I need to have the workflow add and remove items from the
catalog for this to work.

Thanks for any tips,
Colin