MIDI Controller Parameters
MIDI controller parameters are channel-specific, with the exception of poly pressure messages. They affect the entire voice, regardless of whether they are inserted for a part or a note.
The fact that MIDI controller parameters are channel-specific limits the potential of note expression to monophonic (solo) performances. If you edit articulation data on one note, this affects all other notes of the same voice, that is, any other note playing on the same channel at the same time.
Note
If you want to use MIDI controller parameters in polyphonic performances, use controller lanes instead, for example in the Key Editor.