As the title suggest, see below a snippet for a conversation from the trace for "FindConversation" against Office365.
As you can see, the ChangeKey is "CQAAAA==" for all the items (across conversations), and interesting enough, it is the same as in the documentation for FindConversation
https://msdn.microsoft.com/en-us/library/office/ff406144(v=exchg.150).aspx
Is this a known issue?
<Conversation xmlns="http://schemas.microsoft.com/exchange/services/2006/types"> <ConversationId Id="AAQkADMwZjkyMjExLTMzMGUtNGU5MS04OWIzLTAyY2ExYjM2ZjFiMgAQAB2NeP3GTQlDp5B7AWesrrw=" /> <ConversationTopic>Kid's turning the dog green again</ConversationTopic> <UniqueRecipients> <String>John Smith</String> </UniqueRecipients> <GlobalUniqueRecipients> <String>John Smith</String> </GlobalUniqueRecipients> <UniqueSenders> <String>John Smith</String> </UniqueSenders> <GlobalUniqueSenders> <String>John Smith</String> </GlobalUniqueSenders> <LastDeliveryTime>2014-11-26T16:21:37Z</LastDeliveryTime> <GlobalLastDeliveryTime>2014-11-27T14:09:09Z</GlobalLastDeliveryTime> <HasAttachments>false</HasAttachments> <GlobalHasAttachments>false</GlobalHasAttachments> <MessageCount>1</MessageCount> <GlobalMessageCount>4</GlobalMessageCount> <UnreadCount>0</UnreadCount> <GlobalUnreadCount>0</GlobalUnreadCount> <Size>16099</Size> <GlobalSize>28992</GlobalSize> <ItemClasses> <ItemClass>IPM.Note</ItemClass> </ItemClasses> <GlobalItemClasses> <ItemClass>IPM.Note</ItemClass> </GlobalItemClasses> <Importance>Normal</Importance> <GlobalImportance>Normal</GlobalImportance> <ItemIds> <ItemId Id="AAMkADMwZjkyMjExLTMzMGUtNGU5MS04OWIzLTAyY2ExYjM2ZjFiMgBGAAAAAAC/m9YT3n+7RbfoU4MvIUlwBwDO121Po4OqQ7Wo59kdWfWgAAAAAAEMAADO121Po4OqQ7Wo59kdWfWgAAASN40cAAA=" ChangeKey="CQAAAA==" /> </ItemIds> <GlobalItemIds> <ItemId Id="AAMkADMwZjkyMjExLTMzMGUtNGU5MS04OWIzLTAyY2ExYjM2ZjFiMgBGAAAAAAC/m9YT3n+7RbfoU4MvIUlwBwDO121Po4OqQ7Wo59kdWfWgAAAAAAEJAADO121Po4OqQ7Wo59kdWfWgAAANAp25AAA=" ChangeKey="CQAAAA==" /> <ItemId Id="AAMkADMwZjkyMjExLTMzMGUtNGU5MS04OWIzLTAyY2ExYjM2ZjFiMgBGAAAAAAC/m9YT3n+7RbfoU4MvIUlwBwDO121Po4OqQ7Wo59kdWfWgAAAAAAEJAADO121Po4OqQ7Wo59kdWfWgAAANAp24AAA=" ChangeKey="CQAAAA==" /> <ItemId Id="AAMkADMwZjkyMjExLTMzMGUtNGU5MS04OWIzLTAyY2ExYjM2ZjFiMgBGAAAAAAC/m9YT3n+7RbfoU4MvIUlwBwDO121Po4OqQ7Wo59kdWfWgAAAAAAEJAADO121Po4OqQ7Wo59kdWfWgAAANAp23AAA=" ChangeKey="CQAAAA==" /> <ItemId Id="AAMkADMwZjkyMjExLTMzMGUtNGU5MS04OWIzLTAyY2ExYjM2ZjFiMgBGAAAAAAC/m9YT3n+7RbfoU4MvIUlwBwDO121Po4OqQ7Wo59kdWfWgAAAAAAEMAADO121Po4OqQ7Wo59kdWfWgAAASN40cAAA=" ChangeKey="CQAAAA==" /> </GlobalItemIds> <LastModifiedTime>2014-12-05T19:12:48Z</LastModifiedTime> <InstanceKey>AQAAAAAAAQABAAAADQKSGAAAAAA=</InstanceKey> <HasIrm>false</HasIrm> <GlobalHasIrm>false</GlobalHasIrm> </Conversation>
- Edited by Erez Katz Monday, March 30, 2015 9:27 AM