I've completed all five acts, and when I turned off the power and played again, all that was unlocked was Act 1-3. However, my scores from Act 4 and 5 were still in place-- it's just that I need to unlock them all over again as well as collect the prize bubbles.

I turned the power off again and I'm back at Act 3 which is the last one unlocked with the game saying I've collected 0% of the goodies in Acts 3-5.

To add to it, the saved costumes I had of the Metal Gear crew were missing from my saved costumes folder. Though the actual parts to create those costumes are still there thankfully.