I enabled File History to back up two folders to my NAS. Both folders are in C:\Files\ and they are the only two folders listed under Back up these folders.

I clicked the Back up now button and it backs up C:\Users\[username]\Apple\MobileSync\Backup\ .

Any ideas why this happened - and how can I make FH back up what I want and only what I want?

Windows 10 Version 1909 (OS Build 18363.778)