Outlook 2010 does not save sent items in shared mailbox

In outlook 2010, if you have added a shared mailbox (with full rights) to your profiles navigation pane and found that the sent items are not in the shared mailbox where it should be, but residing in your own personal mailbox's sent items. 

We found that the following registry key is the fix for this, we applied this to our desktops and found that it resolves this issue until we update to the latest outlook 2010 version.

•         HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Outlook\Preferences

•         On the Edit menu, point to New, then click DWORD Value .

•         Type DelegateSentItemsStyle , then press ENTER.

•         Right-click DelegateSentItemsStyle , and then click Modify .

•         In the Value data box, type 1 , and then click OK .

•         Exit Registry Editor.



NB: There is a known Microsoft KB on this, it refers to Outlook 2007 in the article but the above steps are for Outlook 2010 
http://support.microsoft.com/kb/972148

The 2007 steps are:

•         HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Outlook\Preferences
•         On the Edit menu, point to New,  then click DWORD Value .
•         Type DelegateSentItemsStyle , then press ENTER.
•         Right-click DelegateSentItemsStyle , and then click Modify .
•         In the Value data box, type 1 , and then click OK .
•         Exit Registry Editor.