I played the game for about 4 hours today, adding my playtime to about 10 hours total. I was at 80.5% done with the game according to the main menu. I logged off and did some other things for a few hours then came back to play some more. Only to find that now I was only '67.5%' done and that about all of the progress I made today was gone. Is that all just gone now? I really don't want to have to redo everything.