Situation: I have a zimbra 7.2 installation on a ubuntu 8.04.

I'd like to make a new clean zimbra 8 installation on a ubuntu 12.04.

Question: How can I migrate all accounts and date from zimbra 7.2 to my new clean installation
on zimbra 8 ?

Is it possible to copy ldap, mysql and data/index store? ?

Thanks for your thoughts