I did a lot of housecleaning and created a new database for all the files I wanted to keep.
I removed all of the other databases from Devonthink.
Every so often, a dialog window pops up looking for one of the old databases, and my current DB will not get synced until I cancel it.
In Preferences, under Sync there is only one database listed, the old ones are gone.
Not sure how to get this to stop.