Interesting, have not previously encountered this trick. Are you on win11? OneDrive personal or business? Googling seems to be messy on this topic, do you map the path manually, or is there a OneDrive setting? If mapped manually, does the separate OneDrive entry remain in Windows explorer? I guess I just want to know how the drive mapping breaks the app connection. Or do you recall a guide that achieves this? TIA!

This one introduces what sounds like symlinks but they're not persistent:

https://www.techrepublic.com/article/how-to-map-onedrive-to-a-drive-letter-in-windows-11/