Upload & Sell: On
Thanks, Herb. I don't use XMP files, LR keeps things only in its internal database. I also sync my computers (three desktops and two laptops) and they all have identical directory structures. What I normally would have done, and of course what I should have done, was to come back from the trip and import the traveling catalog into the main one. I've done that lots of times, and I can vouch for its proper functioning. All would have been well.
The problem is precisely that I didn't do that, and now I'm pretty sure that I did do work on both catalogs. I'm hoping to find a "merge" procedure that will save me from having to redo all those edits. If I can't find it, it's not the end of the world; but it's worth a shot to look for it.