Yeah, I guess I only have sideloaded books. I copied over everything from my Glo on Monday, and although the sync took a while (it had been several months since I had last done a sync, I believe), it worked fine in the end. And my DB is actually originally from my Touch started 3+ years ago, with many many hours
I wonder if you could delete the "old" entry in the user table in the database (or log out?) and then log back in so that database has whatever new unique tokens would be required?