Garyj,
That's certainly true. ebay is constantly adding, dropping, and changing Categories and Item Specifics, which in turn Auctiva would have to modify their one-page lister to accomodate. Auctiva does periodically have maintenance updates to the lister, so a lag betwen ebay change and Auctiva change is evident and unavoidable. The only fix in the mean time is to list with Auctiva and revise on ebay.
If you have a priority item and/or group of items, I'd open a Support Case so Auctiva is aware of a pressing need. It's also possible they missed a change and/or it's a bug.
Dan