This will probably take up my Sunday to resolve

Everything else is on pause. I have at least one copy of it for sure, but it will take time to run the search.

Second option will be more hacking involving possibly modifying a wallet search tool that already told me on both disks there are dozens of copies.

I mill find it. At least one copy exists of the newest.  My worst case projection is I lose the newest utxo or maybe two newest. That will hurt but not so bad as allp