I am migrating a generic IMAP server to zimbra for about 30 mailboxes. Using 8.0.0 on Ubuntu 12.04, in the admin web interface in Account Migration, I did the Migration Wizard and 13/30 imports failed to finish. Where can I find logs about which inboxes imported and which failed?

I looked in /var/log and /opt/zimbra/log but couldnt find where the success/fail of these imports are logged. There doesnt seem to be any way to get more info about these imports in the web interface either.