We're excited to announce that we've fully migrated the Xbox Forums to their new home, here on the Microsoft Community forums!
As of today, going to forums.xbox.com will redirect you here to the Xbox area of the Community forums. We've moved all of your existing threads over so you can continue and start conversations with the new forums experience.
We sincerely appreciate the feedback you have provided over this transition and can't wait for you to check out the new Xbox Forums!
Go to the Dashboard and load the game back up and hit continue. Once you hit continue and you haven't passed the current point, it will take you to that save point. It really acts as an auto save would act, being as once you hit an autosave or another
save panel, you can't go back without starting the mission from the start. Hope this helps! This is what I've came across after finishing the game and messing with it for many hours.