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

I was able to confirm that this wasn't an intentional change. I've filed a work item for our engineering team to investigate and hopefully fix. I don't have a timeframe for when that will happen at the moment.

Thanks for reporting this issue!

wrong thread, please ignore.

• Edited by Erez Katz 26 minutes ago