Meeting request was created by a delegate on behalf of manager, was sent out to many users with option to have receipts returned when they had read the invitation. This meeting request is now being updated by the manager who has switched off the options to have read receipts. However, when manager sends out the updated invitation, he gets a read receipt every time the attendees view the meeting. If the manager creates a new meeting request, he does not get receipts, but he always gets them on updated meeting requests which were originally created by delegate. Is there an option within delegate permissions which will stop this happening?