inter-org meeting response problem

Did you get a solution? I have the same problem.
-----Original Message-----
How does Outlook 200X collate meeting request responses
with the list of mandatory and optional

attendees ?

We have a strange issue in a cross-organization scenario
whe
1) user1 in org A sends a meeting request to user2 in org
B, represented in org A as a Contact.
2) when user1 receives the "accept" response from user2,
in the tracking tab the original

"mandatory" attendee entry for user2 is not updated, but
user2 is added to the list as an

"optional" attendee ! Furthermore, while the original
entry for user2 has a correct Exchange

address, the added entry has a (correct) SMTP address
that is not resolved as a X500 GAL address.

A tool to crack the winmail.dat content (and more
specifically, the meeting request/response

properties) would be appreciated, as well as a
description of how the meeting response is supposed

to be looked up in the attendees list of the meeting
organizer.

Thanks
.