I have been keeping my old Postfix installation users maildirs backed up and would like to move the contents of each to my new Zimbra Postfix installation. Webmin has been doing this and storing the mail as a TAR file.

Has anyone tried to move/import a Webmin backup (TAR file) of a users original Postfix IMAP /home/users_abc/maildir Mail >> to the Zimbra Postfix users_abc mail store?