In FormHero Catalogue there are three intervals that determine how long a work in progress will be saved for:
Time interval to resume WIP (days)
This sets how many days the WIP will be saved for (e.g. 15 days). This interval is renewable: it resets every time the work in progress is saved. (e.g. If you saved a work in progress again after 12 days, it would not be deleted for an additional 15 days.)
Saved WIP maximum allowed age (days)
This sets the upper limit to how long a work in progress can be saved before it is deleted, regardless of whether the work in progress is re-saved.
Time to keep submissions (days)
This sets how many days submitted forms will be saved for.