Exist any like zmmailboxmove for zimbra 6 opensource?

i want move some mailboxes from one mailbox host to another mailbox host.

I think do some like this:

1.- do backup: /opt/zimbra/bin/zmmailbox -z -m user@domain.com getRestURL “//?fmt=tgz” > /tmp/account.tgz (see ZCS-to-ZCS Migrations » Zimbra :: Blog)

2.- Update ldap to point the new mbox server

3.- do restore on the new mailbox server:

/opt/zimbra/bin/zmmailbox -z -m user@domain.com postRestURL “//?fmt=tgz&resolve=reset” /tmp/account.tgz

its only an idea, but i dont know if it will works.