Hi Martin,
Sure I can explain further:
Midi from the chord track still plays my Groove Agent instrument track…
1,) event though the chord track is not linked to any specific track
2.) event though monitoring on GA track is off
3.) even though Midi Input on the GA track is set to “not connected”
3.) … but, it only happens when the GA track is selected / highlighted
2.) … and recording is armed on the GA track (which usually happens automatically when you select a midi track, as set in the preferences).
If the last two conditions are met, the chord track triggers note(s) in GA at every chord position in the chord track. Even in areas on the GA track, where there are no midi parts / midi events.
If you need more info, I can post a screenshot or video link. You can also check out this thread on the subject: (Solved) why is the chord track triggering Groove agent? - #17 by avviano - Cubase - Steinberg Forums