Migrating iredmail server

==== Required information ====
- iRedMail version: 0.9.0
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): LDAP
- Linux/BSD distribution name and version: Ubuntu 14.04
- Related log if you're reporting an issue:
====
Hello there ,

am going to migrate my iredmail setup to a new server with the backup and restore guide .
what about the iredadmin pro how to migrate it ?

thanks.