When files have been excluded and sent to the rear of the drive, upon a schedule execution of defragmentation, those excluded files become part of the mix and are grouped with the other files and become defragged; this is a problem.
Very Concerned!
When executing a defrag session via its GUI, the excluded file remain untouched and at the end of the drive but when a defrag session is automated using DF schedule feature, the scheduled instance of a DF session re-incorporates those end of the drive files (excluded) files back into the main fold. The logic of a scheduled DF session needs to account for excluded files.