User blog:The Joker~/Save Files

Okay, I want to start a new Mage save file after I got my Thief to level 81, but the last time I started a new save, my old level 66 got deleted. I play on PS3, I just quit the game session, on the main menu. I hard saved before quitting, can I start a new character safely, or should I do it on a new account just to be safe?