Normal saves are deleted when you empty your cache. A lot of people set up their browser to do this automatically. Even if you didn't, your browser is finicky, and it will empty it anyway. Think of your normal saves as temporary, because that's what they are.
HeyDixie, I'm not sure if you were having the same problem, but whenever I try to use Save to File, after picking a folder the screen just says "attempting to save data to file".
Nothing actually gets saved, no matter where I try to save it. Is this a problem others are having? Or is this just me being stupid?