So when you moved SSO into a new group I take it you also created a new Server Name alias and ip address for this new SSO cluster group. If so then did you change the SSO Server name in the BizTalk Group properties? You will need to update the group to point to the new Server Name – or clustered resource server name that the SSO noew belongs to.
We went through a process of moving our SSO off of our BizTalk App servers and onto our SQL Cluster and did not have to re-install anything on the Biztalk server, we did have to make the change I mentioned above though.
Hope this helps
Wearsy