The licenses are portable from the old deployment to the new. licenses@cisco.com can assist with this, or a TAC case can get it going. You will need the new deployment stood up since you need the serial/UDI from the PAN nodes.
I would suggest migrating the traditional licenses to smart licensing, it would avoid this issue in the future and is the general direction we are going anyways. If the customer has a smart licensing account, worthwhile looking in to it.
There is a self service option as well if the person that originally fulfilled the licenses is still available/known. You can rehost the PAK from www.cisco.com/go/license without involvement. Selectine the old licenses from the list, entering the new serial/udi numbers, and installing.
