Record Enable deactivates when clicking on 'e'

Hi, when a midi track is in ‘Record Enable’ I can play the vst on my keyboard obviously. But when I click on Edit Instrument Channel Settings in the track inspector (the 2nd ‘e’ button down, not the top one-Edit Channel Settings) it disables ‘Record Enable’ and I can no longer play from the keyboard. Is there a way to keep it enabled?
I’m hoping this is a simple one, I just can’t see it!