PC Sherman Hill Saved Game Fully Corrupted

I saved my Sherman Hill steep downhill game to resume it later. Till now, this worked fine, but after the update it looks like this save game is corrupted and I landed on foot, train completely gone. No idea what happened, but given the recent issues I think it is better to report it.

The save file is included, in case someone wants try reproduce the issue.

I have to start over again and loose an hour of gameplay sigh...

Before I never had this issue.

 

TSW: Celebrating Five Years Without A Working Save Routine