Appointment.Sensitivity not updating after modification to the appointments Private switch

Question

I create a private (check Mark As Private) meeting in OWA
Using GetAppointment I query for the meeting and retrieve it with the proper Sensitivity value of Private
public Appointment GetAppointment(ItemEvent itemEvent)
            Appointment appointment;
            try {
                appointment= Appointment.Bind(exchangeService, itemEvent.ItemId.ToString());
                ExtendedPropertyDefinition prop = new ExtendedPropertyDefinition(DefaultExtendedPropertySet.Appointment, 0x8238, MapiPropertyType.String);
                PropertySet psPropset = new PropertySet(BasePropertySet.FirstClassProperties) { AppointmentSchema.Subject,AppointmentSchema.Body, prop };                
                appointment.Load(psPropset);
            } catch (Exception ex) {
                Logger eventLogger = new Logger();
                eventLogger.WriteToEventLog(true, 108, "ExchangeDataAccess error GetAppointment: " + ex.Message);
                appointment = null; ;
            return appointment;
Go back to OWA and edit the meeting so that it is NOT private.  Run the same GetAppointment for that meeting again but the Sensitivity value is still Private even though it should be `Normal`
FYI:
Its whenever the meeting changes from Private to Normal that Sensitivity is not updated.  The reverse does properly update the Sensitivity [going from Normal to Private].

Answer 1

I tried this
public void loadExtendedPrivProperty(Appointment appt) {
            ExtendedPropertyDefinition PR_SENSITIVITY = new ExtendedPropertyDefinition(0x0036, MapiPropertyType.Integer);
            var propertiesToLoad = new PropertySet(BasePropertySet.FirstClassProperties) { RequestedBodyType = Microsoft.Exchange.WebServices.Data.BodyType.Text };
            propertiesToLoad.Add(PR_SENSITIVITY);
            appt.Load(propertiesToLoad);
                Int32 SensVal = 0;
                appt.TryGetProperty(PR_SENSITIVITY, out SensVal);
            //            case 0: Console.WriteLine("SENSITIVITY_NONE");
            //            case 1: Console.WriteLine("SENSITIVITY_PERSONAL");
            //            case 2: Console.WriteLine("SENSITIVITY_PRIVATE");
            //            case 3: Console.WriteLine("SENSITIVITY_COMPANY_CONFIDENTIAL");
however the SensVal is always 2 (provided it was originally set to Private/2)
Can you test this?  Is this a bug with EWS?
It seems that once an Appointment gets set to Private, it will never change even if the Appointment is editted and that property is changed.
FYI:
I also installed CU5 on the Exchange server.  So it should be up to date now.