We are aware that some players are continuing to have an issue where the game appears to not save their progress, or that the save game is lost at some point in time.
We have been unable to reproduce these cases and they are under an ongoing investigation to help us pinpoint a cause. Some players have reported the following has helped them not have this issue:
If you continue to have this issue, you can help us by giving us more details about your game system, gameplay environment, and how you play the game. ie:
The best way to supply us this information is by joining the conversation in the forums, but you may also send in a support ticket if you would like.