Hi William,
Download the registry file from the link below:
https://1drv.ms/u/s!AvS3D6xKILojrUJWb2yjl6y2kEn...
Right click the downloaded reg file and select 'Merge', then confirm the merge.
Restart (not shut down) your PC for those changes to be applied
That will reset the registry entries so the correct folders are referenced
To tidy up, you may need to move files from the Documents folder in that OldOneDrive folder into the correct Documents folder, and also from the Pictures folder inside OldOneDrive folder into the correct Pictures folder in your user folder.