@ranger, @ldebritto , @mdbraber :
A work-around quite a while later after the OP is Quit OneDrive, relaunch the MS app. Microsoft’s AppleScript API seems to behave differently depending on whether OneDrive is running.
We ( CogSci Apps Corp.) are still interested in providing some URL unification here (i.e., the resource has multiple URLs), as we’ve discussed in other contexts.