cannot remove server that is a target bridgehead (Exchange 2003)

I'm trying to decommision a couple of my Exchange 2003 servers now that I have Exchange 2007 up and running and I'm getting the following error.

"The component Microsoft Exchange Messaging and Collaboration Services cannot be assigned the action Remove because: - you cannot remove a server that is a target bridgehead for a routing group connector.  This server is a target bridgehead for the following connections: CorpRoute"

I can't see the server(s) listed anywhere in the routing connector.  I even deleted the routing connector all together and rebooted and still get the same error.

Any Ideas?

Sure

First off I was deleting the wrong Routing Group.  I was deleting the Routing Group under the Exchange 2003 servers.  When I should have been deleting the Routing Group under Exchange 2007.  Once I deleted the Routing Group "CorpRoute" listed under my Exchange 2007 servers I was able to remove my Exchange 2003 server.

Once this was completed I had to create new Exchange 2007 routing groups for my existing 2003 servers.  I created a Routing Group for each remaining server.  User Power Shell.

New-RoutingGroupConnector -Name "New Routing Group Name" -SourceTransportServers "Ex2007Server.domain.com" -TargetTransportServers "Ex3003Server.domain.com" -Cost 100 -Bidirectional $true