I am not really sure what you're talking about, I know immediately that quicksave cycled and could be lost. I ALWAYS did a name save when I tried any new games. I promise you this is common sense.
Also you say MP and SP as if they are like whole different systems. In the top right is a diamond, that no matter what setting you start with, you can seamlessly switch between them.
You messed up and didn't do a hard save in a game that is extremely save sensitive. You truly have no one but yourself to blame. Many games do not even offer multiple quicksaves, which forces you to make hard saves whenever you want to try something crazy.
The bottom line is your laziness killed your game, if you honestly thought Quick Save 1 was forever stamped into a specific game and not just a quick save slot, then your logic is the huge flaw. Sorry.
