best and only option to this really frustrating message is to make checking for updates the final step before a listing session. If there are new categories then update and go over every listing to make sure none of the IS have changed.

It sucks but this is an eBay bunch of BS because of their constantly moving target and an attempt to push EVERYONE into using their subscription based listing tools.

The other option is to just list then go over each and every listing to check for changes.

I am lucky, I don't sell a lot of items and I still run into this now and then.