I don't know how its happening, but it only happened twice and it it didn't save. The first time i lost about 8 hrs and i keep at least 2 saves because of issues like this before when one of my files said it got corrupted, and i was extremely frustrated with it and i had to replay the 8 hrs and so the then i decided to keep three save files and i added about 6 more hrs to those saves, then i went to go load one of the files and i lost that additional 6 hrs. I haven't played the game since and i have over 160 hrs and i just don't want to take the chance of it not saving. Would love it if there has been any update or word on this.