FBackup Forum

I can add a file to a mirror backup but it won't delete a file from the backup but if I add a file then the file I tried to delete Is gone

Deleted files will not be deleted in the destination drive unless a new source file is created or modified anywhere on the source drive. By "source file" I mean a file that is included in the backup sources list.

Hi,

Yes, that is correct.
The source files are also deleted from destination only if the backup is executed (and the option to remove excluded or deleted files is selected).
The backup will not run if there is no new or modified file/folder.

Note: if the source files are added under a parent folder, when deleting a source file, the parent folder date is also modified so in such a case, the backup will run and the file(s) will be deleted from destination.