Sometimes a client puts a job on hold or completely rethinks the search to the point where I would like to have a way to track this “reboot” for our time-to-fill metrics. There seems to be no way to reset the date so the system starts counting the days again from 0.
This is by design. In order to maintain a good relationship with our job board partners, we need to be accurate with the posting dates for all published jobs. A feature like you described would essentially lead to users refreshing their jobs weekly, or even daily. Another side effect is that it would end up being pretty misleading for potential applicants.