Enterprise Vault provides Administrators with a wizard to export archived items.
You cannot use the wizard to export Enterprise Vault Domino archives.
You can filter the output by date and by Retention Category. So, for example, you could export items less than a year old that were archived with a Retention Category of "Business".
When you export archives to PST files you can then import them back into Enterprise Vault. This is useful if, for example, you are moving a mailbox to a different Enterprise Vault site and want to move its archived items too.