Yes, and that's why I made an announcement and released v0.7.2 as quickly as possible. The problem is that if someone had already been overleveling the girls they were going to have their game broken and the best solution is to start a new game as checking this when loading game can bring more problems than solutions when the easy and safe solution is to start a new game playing v0.7.2.
Anyway if it's only with one girl I can fix it manually if you send me your save-file via DM on Discord. If it's more than one girl (especially Maria and Tali), I'm sorry but you should start a new game.