Thanks for the clarification, catymag!
What if one was to erase rgn41 before registering the unit with Garmin? Would their records still link your Unit Id to map subscriptions, etc.?
Can you share the region Unit ID is stored in, so that one knows which NV region to restore from a full backup in the event of a loss?

Also, it seems my question regarding clearing NV on a non-booting system has gone unanswered. Should I start a new thread regarding it?

In any case, I believe my initial request can be considered "SOLVED" for the purposes of the thread title.