Hi,
We do not support transferring fixed licenses from one AP to another.
For new APs, you could make use of Flexible Licensing - that allows APs to share the licenses and APs get licenses dynamically as elevate SM connects and AP returns licences to licensing server when elevate SM is disconnected.
Please go through this post for details on how to use flexible licensing:https://community.cambiumnetworks.com/t5/ePMP-Configuration-Management/Elevate-Flexible-Licensing-Overview/td-p/78007
Thank you.