I did it mate...And i had problem with team stars...regularcat;3213102 said:you have to remove whats not in 11 from the 12 db & add to the 12 db thats not in 11.
Then i exported the new players and i add them with CM 11...And i manually make the new teams like hansa rostock etc and i had the same problem...
I didn't find the solution so i quest we can't convert the database without problem with team stars...