From the looks of things, the documentation for exporting and importing ldap in 5.x seems to be deprecated in 6: Exporting and Importing Zimbra LDAP Data » Zimbra :: Blog
From poking around, it looks like ldap information is now stored in /opt/zimbra/dada/ldap. I cannot figure out, though, how to do an import since slapd.conf no longer exists.
Zimbra Server » Zimbra :: Blog makes it sound like slapd.conf is gone in favor of cn=config:I have no idea how to run slapadd anymore as it needs a slapd.conf file. Does anyone know how I can do an ldap import with the new cn=config system?OpenLDAP now allows for some on-the-fly configuration changes with zmlocalconfig via a cn=config backend instead of slapd.conf text files for preservation across upgrades.