Stephen Berman <stephen.berman@gmx.net> writes:
<snip>
> when I click on "John.Smith@bla.net" in the attached From: header, the
> resulting message buffer's To: header contains "Stephen Berman
> <stephen.berman@bla.net>" rather than "John Smith <John.Smith@bla.net>". 
>
> AFAICT, this is because message-reply narrows to the headers of the
> containing email, ignoring the headers of the contained email.
>
> Steve Berman

Are you sure that this isn't a customisation your end? My gnus here
seems to do the right thing... (Although it's about a week old, so I
guess it could be a recent change)

Rupert