Failed to connect to the OLAP Source (Error:INF)

Hi,

        I have a sandpit environment which has a BO and BW system... I refreshed the BW system from production and did all necessary post steps for connectivity to ECC/CRM/BO etc.

         The issue I have is when I run webi reports in BO  they fail with "failed to connect to the olap source".

          1. When I run the analysis reports they work fine.

          2. When I create a new webi report and run it works fine.

So the issue is all the old webi reports stop running after I refreshed the BW system.. any suggestions?

Is there some post processing that needs to be done in BO to get the webi reports working after a BW refresh?

btw we use SSO and STS is configured and working as far as I can tell.

Regards,

               Ryan