I think thats BS, that the corrupted saves are not fixed. I understand you say it can be baked into the save, this issue should have never occurred in the game in the first place tho. Just my opinion.
No use speculating or talking about what "should have" happened though. Once the patch comes out, try and load one of those saves. If it works... awesome. If not... is it really so bad? Even if you "lose" 40 hours, the same people who were claiming they had put 40 hours into it were also saying they'd had the game for a week. That's a LOT of time to play a game in a week, so if you have that kind of time to play a game in a week, is it really so bad to have to spend another week to get to where you were? Won't even take as long since you'll know where everything is.