I have a user that when she attempts to modify meeting requests, .e.g. decline or accept, that were previously replied to (tentative) she receives the error "Unable to save free/busy information. The function cannot be performed because the object has been deleted."

1. Would I be wrong in presuming that this is because the original meeting request has already been replied to and deleted from the Inbox?
2. Would changing the setting, under Advanced Email options, "Delete meeting request from Inbox when responding" make a difference? <img src=/S/scratch.gif border=0 alt=scratch width=25 height=29>

Thanx in advance.