We are currently running Zimbra Open Source Edition 6.0.5, but we are about to upgrade to 7.0.1. We will therefore need to upgrade our Ubuntu to 10.04, so will the best course of action be as follows:
1: Do a clean install of 7.0.1
2: Restore Mail backup from 6.05
Will this work? Thinking about it I'm not sure, so any advice would be helpful.