smart mailboxes not importing

I am trying to import my mac mail to DTPro, specifically from one of my smart mailboxes. However, when I use the Import mail function, the smart mailbox does not show up listed as a mailbox. Help!

This is not supported at the moment. It has been requested before but it is uncertain if this is going to be implemented soon. However, from within Mail you can send the contents of one smart mailbox to DTPO.