Hi everyone.
I've been testing in my laboratory a migration of ISPCP from my old Pentium Debian server to a brand new Dell Power Edge server, then migrating to IMSCP. As the test was 100% successful I will do it to my production server in the next few weeks. Hope this helps anyone that is in the same situation as myself.
Follow this guide to move ISPCP from one server to another:
http://isp-control.net/forum/thread-6286.html
**Things that were not included in the above guide:
Need to rsync these directories too:
rsync -az -e ssh /var/www/ispcp/* new_server_ip:/var/www/ispcp/
rsync -az -e ssh /etc/ispcp/bind/* new_server_ip:/etc/ispcp/bind/
Disable subdomain/alias forwarding in any domains that have it enabled with no text in the forward to URL field.
To avoid the ISPCP to IMSCP migration script failing with the orphaned error you need to enter into the PMA manager and delete the orphaned (non existent domains) database entries from the ISPCP tables.
To avoid the duplicate details error in the ISPCP to IMSCP migration script you need to add and delete duplicated entries from /etc/passwd and the group file by running:
pwck
grpck
Once ISPCP is online and everything working now its time to upgrade to iMSCP
Use this guide: http://wiki.i-mscp.net/doku.php?id=migration:ispcp
After everything is online and working you might want to migrate Courier to Dovecot:
To install and configure dovecot:
/usr/local/src/imscp
perl imscp-autoinstall -dr po
You now have a brand spanking new IMSCP 