Hello Rick,
Yes the T4 can read the T2 registrations but they have to be converted. However, there are hundreds of FREE styles and registrations for various keyboards - including the Tyros 2 on the following website:-
www.psrtutorial.comHere you will find a wealth of information, just click on/or put Tyros 2 in Search Box and you will be presented with all that relates to the Tyros 2.
Have fun!
Audrey