Since it is not possible to do a SDR restore from a dedup folder, the SDR button should be turned off when the job is targeted to a dedup folder. Also, the .dr file should not be created if the job is targeted to a dedup folder and the joblog should say that the .dr file is not created because the job targets a dedup folder.
This is to avoid a misunderstanding that a backup to the dedup folder can be used for a SDR restore.