However… having the actual app on that OneDrive folder will do you no good.
The Plex Media Server on your Windows machine is storing critical configuration information in the Windows Registry. If you simply execute the Plex Media Server, that’ll establish a new server on the new machine.
If you’re going to do that. Stop the Plex Media Server from the new machine after running it for the first time and perform the steps of moving the Plex Media Server data folder – except for moving the newly created data directory on the new machine, point it to wherever your original server keeps its data directory.
Keep in mind:
Plex is not designed to run as a “portable” application that you’ll simply plug into a device and run. There’s a risk this will break your setup for good.
