Main monitor for the Remote Desktop Client

I was able to fix this... after hours of frustration.  Yes, AVD, of course i want my VERTICAL MONITOR to be my primary display...

I edited this file:
ran "mstsc /l" and looked at the resolutions to find which one was the one I wanted primary and which secondary.  For me it was 1 for primary and 0 for secondary (note these don't match the ones in the display arrangement settings window)

Then, I found and edited this file:
%localappdata%\Packages\MicrosoftCorporationII.Windows365_8wekyb3d8bbwe\LocalCache\settings.json

I replaced:

"selectedMonitors\":[0,1],

with:

"selectedMonitors\":[1,0],

and the next time i launched my AVD connection it was fixed.