If a user has an appointment that they are not the organizer of, will it get changed using the Exchange calendar update tool?

Q: If a user has an appointment that they are not the organizer of, will it get changed using the Exchange calendar update tool? Or is it only his appointments that get changed that he/she organized?
A: All appointments will get changed as well as meetings that that user is the organizer of. Meetings that that user did not organize will not get changed until the organizer's mailbox is rebased. They will receive a meeting update for those meetings from the organizer which they need to accept.