Running 2020 R2 Build 20.206.001
I was wanting to change the default location on all of my vendors and thought that I would try an import scenario to make the change. I cannot delete the old location until I make another location the default location. Using Inspect Element on the Set as Default button on the Locations tab produced the error:
An unhandled exception has occurred in the function 'MoveNext'. Please see the trace log for more details.
Also happens in a local install of Build 20.208.0031.