[imp] 'Sent' Items Not Retaining A Copy

[Channing]

Hello All,

I don't seem to be preserving a copy of email sent in my 'Sent' folder 
as designated by my preferences (and also established on the 'Message 
Composition' screen).  The newest email I have in 'Sent' is from 
December 1.  I keep current with HEAD (once a week or so).  I'm on HEAD 
(well, yesterday's HEAD if it makes a difference).

Are there any known issues, or is there something I should try?

Thanks in advance for your time.

Channing