Update

The main Mac Mini dessktop HD is erased.  I confirmed that.  It does keep the operating system (High Sierra, not Catalina).  That is a relief.  Apple will probably look back on Catalina some day the way Coca Cola looks back on "New Coke" and Microsoft looks back on the Paperclip  function.

Or maybe not.  Apple might be dedicated to forcing it's users into iCloud and new annual subscription apps forever.  Already, I can see that I am being forced to choose the subscription MS Word and Excek (which I love vs the Apple Pags and Numbers (which have few features).

Fortunately, I have fewer word and spreadsheet demands than I used to, so I might die before they make it a "pay for every use" world.

But that's neither here nor there right now.  Right now, I finally have my OLD Mac Mini (the one BEFORE the one I spilled the wine on - call it the grandparent of the new one and the parent is dead)  being backed up on a 4TB My Passport external HD (51 minutes and counting down).  That isn't over-writing my older backups, just saving what is on my OLD Mac.  The pre-Catalina backups are still there.  4 TB is a lot of storage.

My idea is to save what is on the OLD Mac, (just in case) and restoring the Oct 2019 backup Mac-to-Mac directly.  Since I can't seem to choose the backup to migrate from Time Machine, but CAN if it is the only version on the OLD actual Mac (there being no other choices), I am expecting Migration Assistant will work this time.

Backup 34 minutes and counting...

BTW, my previous migration created 69,000 photo files.  I confirmed that this OLD Mac only says 17,000.  I take that as a sign that there will not be duplicates.  Time and a few more steps over a couple days will tell.  If photos duplicate along the way, maybe this time I will see where it happens.

Backup 10 minutes to go (an hour later, LOL) but it is getting close to finished.  The computer makes a guess on time, and it changes by what files it finds.  It is like a marathon runner not knowing what hills of downslopes it will find.

I didn't waste the time just sitting here.  I cubed 5 pounds of pork shoulder I smoked a couple days ago.  And packed the cubes 4 oz each into ziplock bags and got them in the freezer.  I'm set for any pork meal for months.  Very versatile stuff, pork!

The usual is adding 1 potato, 1 carrot, 1 celery stalk, 1 small onion, a couple cloves garlic, and oregano, thickened with flour.  But smothered in bell peppers or carmelized onion is good.  Mixed with stir fried veggies and served over spaghetti with soy sauce is good.

Well,  the backup is going slowly.  For every GB it backs up, the computer offers more GB,  so I guess it is going to take hours.   It is up to 90GB and the total on the HD is 340,  so I might as well let it run overnight and see what I get this afternoon...

IF it backs the whole current drive up on the OLD Mac, then I Restore the OLD computer with the OCT 2019 backup and THEN Migrate that to the new computer (because thenit will be the only version Migration Assistant can find).  Abd THEN if that works, I might actually be back at Oct 2019.  and possibly be able to copy the photos since the without duplicates AND have my email settings back.

Aren't computers fun?  And then Thursday morning, I get to (try and) capture Marley to stuff him into the PTU and bring him to the vet for HIS teeth cleaning adventure.  Oh the thrill of the chase...!