For the Avalanche portion you will need to perform a backup, then install AvalancheSE 5.3 on the new server and restore the backup. Backups and restores can be completed using the task scheduler.
For licensing and the licensing server you will need to contact support for a license exchange and install the client license server on the new machine and enter the new licenses once you have decommissioned the old license server.
Regards,
Nick R