Different functionality from Outlook and OWA when updating the Attendees Web Part in a Meeting Workspace

I have always thought one of the cool interactions with SharePoint and Outlook is the capability to create a Meeting Workspace and to programmatically update the Attendees information when a meeting invitation is accepted or rejected.  Today my current client and I discovered that the OWA client they have currently deployed does not have the same capabilities to updating the Attendees information.  I was sort of surprised that it didn’t work but I guess there must be some extra functionality in Outlook that might have this extra capability.

I’m going to do some extra research on this and see if I can’t find out why it doesn’t work and post back my findings.  If somebody all ready knows the answer I would be more than welcome to understand why it doesn’t work and if there is a work around for the lack of functionality.