Issue Backup manager not deleting backups

[cisco]

Hello, I use Plesk Onyx 17.8.11 Update #61
The problem is that Schedule setting for backup manager: Keep backup files for 1 week is not working at all.
Any clue about this? is it related to incremental backups too?

 

[Bitpalast]

It's not "keep backup files", but "keep backups". Example: 1 full backup + 6 increments = 1 week. Next week starts. A new full backup is made and another six increments before (after 2 weeks) the whole first week is removed.