MIDI SysEx Implementation and Assignment to External MIDI Devices

Questions & Suggestions
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49

From this post:

Keyboard Maestro simply sends the MIDI note to the system, you then need other software to direct that MIDI note.

So it sounds like you are sending "to the system" and "the system" is using the SysEx address to target the right device. Seems to be the best you can do with what's available.