Hello Everybody!
I am just writing, this after 2 days of pain, to thaks everybody in this community!

I migrate may ZCS 6.0.2 from Deb 4 32b bare metal to a VM Deb 5 64b.

first I follow this
Moving ZCS to Another Server » Zimbra :: Blog
But I have problems with pearl on the second instalation (maybe my fault)

then I try this
Network Edition: Moving from 32-bit to 64-bit Server - Zimbra :: Wiki
After copy my data to new server I have a lot of problemas with MTA and zmmailboxd.
To MTA the problem is that debian install exim4 default (some hours to discover that...
To zmmailboxd the problem is certificates on "how to" we need to edit localconfig.xml, on item d) mailboxd_keystore_password change to old pass and this is the problem!!! I have on:

/opt/zimbra/bin/zmcertmgr viewdeployedcrt
::service mailboxd::
XXXXX ERROR: failed to export /opt/zimbra/mailboxd/etc/mailboxd.pem from keystore.

keytool error: java.io.IOException: Keystore was tampered with, or password was incorrect

XXXXX ERROR: /opt/zimbra/mailboxd/etc/mailboxd.pem does not exist


So I I back to new istalation pass and recreate the certs abd all works!!!

Again Thank you very much!!