So I had some fun trying to migrate from Parallels Plesk 9.5.x to 10.0.x (UNIX based system). It took me some time but after finding the documentation the process was actually very smooth, however unlike other new releases I found this documentation much harder to find.
Anyhow I had to move my Parallels Plesk 9.5.x VDS (Virtual Dedicated Server) to my new Parallels Plesk 10.0.x VDS (Virtual Dedicated Server). I bought my VDS systems through Go Daddy and renew yearly. Go Daddy does not allow root access to their VDS systems so doing a migration from the Parallels Plesk Control Panel was not an option – although Go Daddy has a KB article which allows you to modify the SUDO (super users list – UNIX based systems) which didn’t work for me.
Thanks to GOOGLE and after several hours I found some documentation which instructs a user to convert a Plesk 9.xdata backup to Plesk 10.0.x compatible backup: Parallels Plesk KB Article. Once I read this article the process went very smooth. The reason I had problems until stumbling across this article was that there is/was no documentation at the time telling me I could not restore a Plesk 9.x backup to a Plesk 10.x backup.