1st of all its best to put them in not the 1st registered players list but the 2nd one (I hope this bit makes sese to start with 'the lists are the ones with tons of unregistered slots if you go to the next set of slots', there is 4 lists the other 2 lists are for bought players (from PESshop)) then if you search by group and R1 will bring you to others, young players etc... there is a group for creadited players and all your created players should be in there.
Sorry if I have made this a lot more complicated than it is someone else may explain it better.