Hello Yusuf,
Not sure I understand your question but I mean each license you get is related directly to your S.N on your ASA.
In this case you have an asa 5520 and other 5585 so S.N's are going to be different ( no way to migrate that on a single box)
Let me know if I understood the query
Julio Carvajal
Senior Network Security and Core Specialist
CCIE #42930, 2xCCNP, JNCIP-SEC