Transfer crashed host license to new 2012 r2 server

Hello there, first of all thank you for answers. 

we have a vmware host 5.5 and has an a file server and Terminal server as a guest os running 

host was good for month now it started crashing. we replaced with new hardware Host. file server and applications database migrated successfully with freshly installed 2012 r2. 

now, how would I transfer  2012 R2 Terminal server RDS per User CAL's to another new Terminal server  ?

Terminal01 to Terminal02 , once this successfully done, I would be killing the Terminal01 RDS.

I would really thank you if anyone know the answer to this 

Best Regards

Reddy

GR