[MlMt] Purge cache?

[Randall Gellens]

How do I force MailMate to purge cache and refresh a mailbox?  I'm not 
sure how, but all my mail from the beginning of using MM until 
mid-December got permanently deleted, so I restored my IMAP server Inbox 
from a backup as a new mailbox.  Mailmate sees it but insists it is 
empty.  I can telnet to the IMAP server and SELECT it and I see 
thousands of messages.  I'd like to force Mailmate to refresh its cache.

--Randall