No changes are made in OneDrive directly nor from other sources. Only SyncBack is modifying the files. This makes it a bit different from other threads I've found.
I was looking at this thread to try and get some insight.
I'm still unsure if the "Retrieve a list of all the files and folders then filter" should be enabled or not. It doesn't seem necessary since the difference between the files on disk and the local DB that SyncBack uses would be enough to know what files need to be added, deleted, overwritten."To get around such limitations, SyncBackPro builds a local database to store the files' details which it cannot store on the cloud service. When the profile runs again the next time it will use the cloud database to identify the file differences at your Source and Destination.
I've poked around trying to find any other settings, but that seems to be the only one. Any insight would be wonderful.