Indeed. There's a reason old scouting preps were overprepped.
Anywho, I've been wondering if the opportunity cost of keeping it around in the inventory for later really too much on certain maps? Making sure you've a least checked out which subdungeon you landed is probably a good idea, because in some cases converting it is like throwing 2-3 dings of high level health away. Strangely enough, this is even more so with resistance stackers...