WD backup is copying files back to C: Drive

WD Software & Mobile Apps WD Software
1

I am backing up my C: Drive to my F: Drive (WD). I have some large outlook files. It’s backing up on the F: DRive, but coming back to C: Drive too. I don’t want the backed up files (5 versions) back on the C and also on the F;

How can I stop this.