Our zimbra installation creates daily backups. Every 7 days a full and the other days an incremental backup.

I am now trying to restore one single account two weeks back in time. I have tried the administration console and also the command line zmrestore but none of them do what I expect.
If I restore a single mailbox into a new account (using the prefix functionality) at a certain time (lets say restore the 15 november backup) and then use the 'view mail' for this account I see mails running up until the 2nd of december. This is not what I expect as a restored a backup from 15 november!

Can anybody help me with this?