EWS : Appoitnment Item.Id.UniqueId is not constant

Question

There is a weird problem I\'m facing when working with EWS Managed API 2.0 with Exchange Server 2007 SP3.

When I create an appointment and I save it, I get its ID us

Answer 1

This is Actually a very common problem faced by those who are using the EWS Managed API.
For some reason (I do not know why) the Unique ID changes when the appointment is moved to another folder.
You can find your question and your answer in my post here:
Exchange web services: why is ItemId not constant? [continued]