Well it said credits and crap would transfer over but so far none of mine have switched. Do I need to go somewhere for it to work, or press a certain button?
I know that because I was level 43 on Forza 3 it gave me 50,000 credits on Forza 4 and a few bonus cars, but if I'm correct you can't transfer all your credits and cars from Forza 3.
It will only give you a certain amount I had a ton of cars and lots of money in forza 3. Forza 4 gave me 20k credits and like 4 of my cars. Sucks I can only sell them for $100 each. Guess its better than nothing.