HELP - folders disappearing!

Dear All,

I've been using dbmail for the last few weeks on a testing site.
Last week, we thought it was good enough for production use, so, we 
transfered all our e-mail accounts to bdmail.

But this monday morning came with a (not so good) surprise: my folders 
aren't listed anymore!
They *are*  on the database, but the imap server can't find it!

I'm using dbmail 1.2.5 with squirrelmail - no configuration has been 
changed on squirrel during this weekend and the query I used to verify 
the folder names is:
select userid, mailbox_idnr , name, seen_flag, answered_flag, 
deleted_flag, flagged_flag, recent_flag, draft_flag, no_infer
n, is_subscribed from users, mailboxes where owner_idnr = user_idnr AND 
userid='jonas'

any help would be appreciated!!

[[]]s
Augusto Bott