When you have multiple virtual MIDI cables connected to a device only one of them is shown.
Here you can see that after deleting one cable the other one appears:
I was about to navigate to the connection again when the CP Manager crashed (at the end of the video).
Let me know if you need the crash report.
The forum software reduced the image size so it might be better to open the gif file directly: https://lh3.googleusercontent.com/-7onY ... -crash.gif
There's also no connection indicator on the MIDI virtual cable box. I think there should be one (with the number of connections)?