BTW, I added the new disk as a “New Disk” using Acronis and now it shows up (everywhere it can be detected) as Disk (E:) and both Windows and Acronis show it as “GPT”. BUT, when I go to make the clone ACRONIS insists it must make a totally exact clone and will convert the new / target M.2 SSD to MBR.
So, that’s where my post previous to this one comes into play, evidently...