Thanks.

You're doing what I did before I got tired of "guess and check". I wouldn't say that the nuclear option is warranted, but you're free to do as you like. I'll share a couple of general ideas about the nuclear option.so I guess a reinstall is in order
Armed with that information, if I have to nuke, I'll first manually export and name the file something like "Before reverting - 2021.12.15.REG". Then I import a backup.reg that I was satisfied with before putting my finger in the pudding, so to speak. The software closes, and I make sure the service is stopped (%windir%\system32\services.msc). I reboot, let the services launch, then I launch the console. I'm not saying this is the best way to do it, I'm saying this is how I recover from farking around with settings.If you select the Auto export option, you may select a folder location for these files. The software maintains a rolling set of three files, always from three different days. These are updated only when the software service is restarted. Restarting the software multiple times on a single day results only in the replacement of just one of the backup files.
Sounds like you should stop here and get a refresher on these features. Check out HomeTech Video on YT - Blue Iris: Zones and HotspotsIt looked fine whilst editing but when I returned to check, the zone was nothing like what I had tried to do