Recently did a full server migration with ISPConfig installed. Luckily it was within the same distro but an updated version of CentOS-4.5, had to add centos-4.5 support to ispconfig conf file prior to the install. I also made sure that I was installing the same version of ISPConfig on the new server, and upgrading to the latest once the migration was complete and the server stable.
These are just notes I took down for later reference, just in case it happens again!!
Preparation:
In preparation for the migration, create A records to point to the new server IP, for all domains to do temporary redirection:
{newhost.domain.tld} : xx.xx.xx.xx
www1.{domain.tld} : xx.xx.xx.xx