Comment 1 for bug 325005

I implemented this by adding a 'Keep Backups' option in the preferences, which defaults to 'Forever' (other options are like 'At least a month'). Based on this preference, Deja Dup may choose to delete backups past the time selected.

Full backups are triggered based on several different factors now, but one factor is half the time of your 'keep' length. This is designed to give you 2 full backups at any given time. So if we screw up one, you have *something*.