[imp] Folder Naming and subscriptions - IMP/Dovecot.

[Manilal K M]

Hi ,
  I have a working installation of horde-3.2 and imp-4.2 as my email
client. In the server side I am using dovecot-1.0-0RC7 and qmail. The
setup was working fine till the end of the last month. But when the
month changed all the sent-mail folders collapsed.

The sent-mail folders are renamed like this:
.Sent-Mail-sep-2006-aug-2006, Sent-Mail-sep-2006-jul-2006,
Sent-Mail-sep-2006-apr-2006, instead of renaming only the .Sent-mail
folder to .Sent-mail-sep-2006. I know that this is a dovecot issue.
But the problem is that eventhough I have renamed the folders using a
shell script, the created folders are not listed in IMP folder list.
Even "Rebuild Folder Tree" doesn't help. Is there any configuration
that I should modify ?

One last question. I want to rename the folders something like this
.Sent-mail-2006-09 instead of .Sent-mail-sep-2006. How could I
accomplish this? is there any conf/pref parameter which I could work
with ?

regards
Manilal