When you create a new midi device you are presented with a dialog (image attached).
My question is - how can you get back to that dialog if you want to change something?
The only way I have found so far is deleting the old device and setting it up again. 
Would really appreciate some input here.
Unfortunately there is NO WAY to change these settings later in the process. The midi devices are a great idea, but the implementation sucks. Just an example: you cannot use note on note off values to control a midi device, the editor does not allow it. …
The midi devices - I followed its evolution quite closely - was an idea- a feature implemented (as I assumed by a 12 year old junior-programmer…;o)… and since it was not in use NOT developed further - instead of that they provided a dedicated documentation how to handle the rubish-editor.
Sorry to have no better news for you.
HTH, Ernst
Seriously?!
It is disappointing on so many levels that a company like Steinberg, who more or less pioneered midi, would have such a poor implementation of external instruments in 2020.
Taken together with the fact that i/o and support of external FX is quite lacking as well I am beginning to believe I may have to consider moving away from Cubase for a more hardware friendly daw.
