Well, it's back up!
(Finally)
That took a bit longer than I expected. I've made note of the trouble spots in the process, and will hope to prepare things to move more quickly from now on.
Oh, and Bonk: I am definitely going to rework my DB editor to work on ranges of hexs, rather than having to put in one hex at a time! (However, I don't expect to ever have quite so many hexs to edit next time.)
-Herr Burt