I have explored quite a few dungeons and am now looking for a way to reset the instance maps on an individual basis so I am not retracing my steps especially in the larger multilevel dungeons.

I have searched for a console command to no avail so presume there is not one therefore I hope there is a mod for that

Tia.

Can you clarify a bit? Is it that you want the map to show a dungeon you've previously visited as "new" again, so you won't see the whole dungeon map as uncovered? I don't think that's possible, or it would have been done for the random Oblivion worlds, which are "known" when you hit one for a second time.