Long story short, the sysadmins have moved me to a new mailserver. In the process, they needed to create a separate account in Thunderbird and disable my old account. They took care of all of the mail migration.

However, my saved search folders didn't go along for the ride. I have over 20 complex searches that I'd rather not have to reenter manually by hand. You can't drag saved searches between accounts like other folders.

I tried closing Thunderbird, doing a find/replace in virtualFolders.dat in my Thunderbird profile folder, saving that file, and reopening Thunderbird, but that didn't appear to do anything. I'm assuming the search folders are also saved in one of the sqlite databases... does anyone know where to look?