Connection client blocking USTN.m01 file

We are using MicroStation V8i with some kind of 'managed workspace'. We are using an application that builds a user-specific configuration on startup of MicroStation. After closing MicroStation, the configuration is deleted.
Recentley I installed MicroStation V8i SS10 (08.11.09.919). At deleting the configuration Windows is telling me that Ustn.M01 (old interface file) file is in use by Bentley.Licensing.Service for windows. Only after killing both the Bentley.Licensing.Service and the Connection Client via the Task manager I was able to delete the file.

Does anyone know why Connection Client keeps track of the old, deprecated Ustn.M01 file?