: Thanks a lot! I also wonder about that...
Based on your answer, does that mean that:
- All files will automatically be considered changed and automatically be re-uploaded?
- Do you need to run a consistency check?
- Will all previously uploaded files be removed from the backup set? (if not, is there a way to do so? in case you changed or added encryption?)

I did change encryption (before: none) on a backup task from the Service Provider Web GUI, but wasn't sure what to do next to make sure that ALL FILES on the backup media are encrypted. I understand that I can't re-encrypt all previously uploaded Data (I think!?), but would like to at least wipe out everything and then all newly uploaded data will be encrypted. Or since I'm using an "X days retention FROM BACKUP DATE", will all data be reuploaded over the X days when they change and then be "encrypted"? If so, what about unmodified files?