No Go Exchange 2010 OWA with EV9.0.3

Hi,

I'm experiencing exactly like this, https://www-secure.symantec.com/connect/forums/owa-2010-ev-2010-archived-item-currently-unavailable .

Here is my my story.  We are currently in  the process of moving from Exchange 2003 to Exchange 2010.

Setup:

1 enterprise vault server = doing archiving on exchange 2003 ;  upgraded to version 9.0.3 a few months ago in preparation for the Exchange 2010 implementation.

1  Exchange 2003 Front End Server 

1 Exchange 2003 BackEnd Server

1 Exchange 2010 Cas / Hub server

1 Exchange 2010 Mailbox Server

Some details:

• Access to archive via Outlook is ok.
• OWA 2003 access to mailbox not yet transferred to exchange 2010 is still ok.
• From OWA 2010 Archive Explorer is ok
• From OWA 2010 can view item if i select "Click here to preview the original item"
• From OWA 2010 can not restore or archive  -  no accessibel vaults
• Explicitly added <add key="EnterpriseVault_ExchangeWebServicesUrl" value="https://myexch2010casserver/ews/exchange.asmx"/>
• Enable logs on CASServer; i see it is retrieving hidden messages from web services
• at the end;  
• 31/10/2012 08:40:06 [2696,18] [Id::OwaId] Not enough information to be able to convert to OwaId
  31/10/2012 08:40:06 [2696,18] [RequestProcessor::ProcessRequest] Archive Mailbox: False
  31/10/2012 08:40:06 [2696,18] [RequestProcessor::ProcessRequest] Setting response filter: Premium.WunderBar
  31/10/2012 08:40:06 [2696,18] [ImpersonationManager:StopImpersonation] Stopped impersonation
  31/10/2012 08:40:06 [2696,18] Request processing finished
  31/10/2012 08:40:06 [2696,18] #############################################################

Please advise what else to check.

TIA.

JoJo