[MlMt] submailboxes of smart mailbox according to imap folder

[Zvi Biener]

Hi folks,
I haven't found how to do the following, can anyone help?

I have a smart mailbox that chooses messages according to tag. Messages 
w/ tags are distributed across several IMAP folders/mailboxes. Can I 
configure the smart mailboxes so that its sub-mailboxes are divided 
according to the IMAP folders? I can't seem to find the right option 
that selects for this.

Thanks,
Zvi