hi schimble, I am having the same issues. I can see that the server is working by going to https://<bes>:7443/mds-admin/services/AdminMgmt?wsdl and I can see all the functions available. I however cant view the MDS integration service in the Blackberry manager as it cant find the server.
On the devices the MDS icon appears and pretty much indicates that it is working correctly. With the upgrade I seem to have lost my installed applications as well so I cant test them or reinstall them as I cant access the MDS integration service.
I would appreciate any help that can be given as to what the correct URL may be or where I may have gone wrong.