Took me a while to understand what Weimar was/is saying, but I understand now, very very good thought. To put it simply;

Let's say you save at the swamp just as the monster is about to engage battle with you. You reset, and something goes wrong, and the monster immediatly engages you every time you re-load your save, meaning the fight with it is inevitable, thus is a loss, bye bye save game.

Use a different slot.