"All MIDI Inputs" not working as expected

Does not do what it says on the tin.

My Impulse midi in does not work with ALL Midi Inputs selected on a track.

Has always done what it says on the tin for me :wink: … most likely some configuration issue.
Have you checked in “Studio->Studio Setup->MIDI Port Setup” if your device is active and included in “All MIDI inputs”?
Does the device work if you select it explicitly on a track?