External Midi always plays selected track

Hi all, I'm trying to control the MPC one from an external Sequencer (Squarp Hapax) and I'm struggling to stop the MPC playing the current selected track from any Midi input (as well as the tracks that are supposed to be playing).
I've had a search and tried all the comments from the Bible but yes I can't stop it triggering from Midi when selected.
Example setup:
Two tracks, first a drum track and then a bassline for the second.
Drum track Channel 1, MPC in - Selected IN instead of Auto or Merge.
Bass track Channel 2, MPC in - Selected IN instead of Auto or Merge.
So If I run a sequence that controls the Drums and the bass, if I want to change something in the Bass track and select it, the MPC triggers on all the Drums too?

Is this normal behaviour? Is it possible to stop it doing this, as it's unusable for me in this state.

Firmware 2.15

Thanks for any help.

In the MPC Midi Preferences, make sure you don't have 'Global' enabled for the Midi input port used by the Hapax.

Awesome thank you, exactly the problem.