Player career history disappearing. Anyone got the solution? [FM11]

Hello.

So I'm playing a game as Servette FC in Switzerland, everything is going good and all, game seems fine, until I started checking my players history. Apparently something has been deleting their histories, well, at least the part of them playing for me. The funny thing I found out too is that all the players in the game seems to have "played" for the same club in Brazil (SC Corinthians Alagoano). And I really doubt that club has signed everyone in the world. I'm guessing this is a bug?

I read some other thread where people had had the same problem, but that was with FM10, and there some had reported problems with AVG, save game compression, and where they had been playing around with the editor. I'm afraid that I've also been playing around with the editor, but I merely changed a colour of one team so I could actually read the text. Might this be why? Also, I was using save game compression, and I have AVG.

Here's an example of what I mean:

Anyone got an idea how to solve this? Or do I have to start a new game?