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Basically what I said in the title, My game was saving and crashed now my Ironman save is corrupted. Can I get a back up or did I just lose 11 hours of progress.
I'm sorry for that which appears to be a fairly widespread and serious bug that affects cloud saves. I'm sure it will be fixed soon in a patch. Until then best to only play non-Ironman games with local saves. Sorry about that!
There's an unofficial method of preventing this, which I'll pass on FYI:
Short summary of your issue Ironman Game Progress Not Saving Game Version 1.0.2 What OS are you playing on? Windows What platform are you using? Windows Store Do you have mods enabled? No Have you tried verifying your game files...