When a fallen one does successfully rehabilitate, do they get their old job back?

They work towards having their old job back but the problem at hand is that the fall from grace happened eons ago. The prior duties were likely relating to worlds that have moved beyond their prior circumstances, so in effect, the job has faded from existence in some way or another. So, what we would say is they will be launched into a new venture in keeping with their prior experience base but fitting with the current state of affairs within the universe where their actions would be of benefit.