>>537705793
It's intended, that's the reason they give you 3 save files. They way I've been doing it is as soon as I unlock a new clearance ops, I know I'm too low level to finish killing everyone in 2 or 3 turns, so I go just for one boss and kill him, then quit and save it in one of the slots. The one in the picture for example frops level 41 shotgun, way above my current level, so I can sweep just that guy for a couple of days.