BaseCamp Timestamps Vanished

My wife just complained that all of the .gpx files I sent her today had no timestamps. When I went to re-export the files she needed, I realized that every track in my BaseCamp database has the timestamps removed. All the tracks seem to be there, just missing timestamp, elevation and leg data. I checked out a similar post from a few months ago, but those steps didn't seem to work for me.

While debugging I reimported some tracks I exported just last week and lots more data showed up:

I did a quick BaseCamp uninstall/reinstall and tried switching to a different copy of the database, but nothing has worked so far. I have plenty of backups of my database files, so I'm not super worried about data loss, but I'm sorta out of ideas for debugging. Any advice?