As far as I know, there is no longer an active Service Excellence. That does not mean that all of the clients decided to go to Intellishop. Clients have a tendency to move from one MSC to another. Some clients are infamous for seemingly trying every MSC in existence.
Sometimes an MSC sends out an announcement of changes. The one I recall was the merger of Mystery Reseachers, Beyond Hello, and Insula Research into what is now SeeLevel HX.
Shopping Southeast Pennsylvania, Delaware above the canal, and South Jersey since 2008