IMAP Sent Items problem

Hi,

i have problem in using VO with my IMAP server. Eveyrhing works fine except when i reply to email no copy is saved in Sent Items folder. They do not appear neither on server nor locally.

It also apparently impossible to map a remote folder to become special folder in VO such as sent items, trash etc.

Am i misconfigured something or it is a known issue?

Best regards,
Igor.