I've read the wiki about backup and restore broken zimbra instalation. I've do this progress :

1. Moving broken zimbra to /data/zimbra-old
2. Install new zimbra to /opt/zimbra

And now the problem is the old ldap server is broke, but the file (msg, attachment, etc) from broken zimbra instalation is complete. Could I restore the complete message (include attachment, contact, etc) from the old zimbra to the new one? (in case, the ldap server is down).

$ zmcontrol -v
Release 7.1.3_GA_3346.RHEL6_64_20110928134428 CentOS6_64 FOSS edition.
Using CentOS 6.0 x64