Thanks so much, Max. Looking at your documentation link, I see the environment switching menu item on the bottom. I had noticed it before, but 1) both projects had almost identical assigned names based upon time /date so I didn’t notice the discrepancy and 2) I never would have expected that the environment would remain on the old one when a new project was loaded. You also expressed a similar opinion in one of the threads that you gave me.
I see no way to rename these project folders after they have been created with the “date-time-MCU type” name. It is not usable if that is the only way it can be done. Probably I was given a choice to define my own name while importing it, but I don’t recall being asked for a project name. I need to look into this as well as examine the threads you gave me.
Again, thanks so much for your time/expertise. I expect that there will be lots of differences in PIO than what I am used to on the other IDEs that I routinely use.