In reply to:
About the one auction that shows as unsold on eBay, did the buyer's transaction get cancelled by eBay?
Just wanted to say I figured this one out. The Lot was originally listed last November. It didn't sell. That Lot is still in AW's database (Status Offline). I had located it in AW with a Title search and didn't realize it was not the same Lot that had sold on a relist, well, not actually a relist, because for some reason (??), there are two different auction IDs for the same eBay Stores item (that's why I saw it on eBay as sold once and unsold the next time I checked). I notified the buyer, but AW doesn't have that info, because I imported 7 days' of data, and the Lot ended 8 days ago (and because my backup data is incomplete or defective).
After I got the external backup drive a few years ago, my husband asked, "Well, is it working?" I knew he meant was it working for backup, not just is the drive functional. And I had to say, "Well, how would I know?" You never know for sure if your backup systems are any good until it's too late to change your plan.