That’s true.
There might still be another solution for your specific case, @ClaudioKrott:
Send the notes in the global rackspace to a port called “Local GP Port”.
In my example both the inputs “UM-1” and “Network Session 1” are merged to the GP Port. In your case these would be your different controller keyboards.
You can then learn your widgets to the desired messages coming from the GP Port and won’t ever need to change them when switching keyboards.
Even with this hack, it would be definitely worth to still use control aliases for this in the rig manager:
And please don’t ever use the OMNI MIDI In this case!