Page 365 of the Montage M Operations Doc shows the Filter screen for a drum key.

The screen shows the typical filter graphic and 4 parameters: Cutoff, Cutoff/Vel, Resonance, HPF Cutoff.

Changes to either Cutoff or Resonance are reflected on the screen.

Changes to HPF Cutoff are NOT reflected on the screen for then entire 0-1023 range of values.

HPF Cutoff (HPF Cutoff Frequency)

Sets the cutoff frequency of the high pass filter.
Settings: 0–1023

Is there possibly a parameter on another screen that is taking the HPF Cutoff out of the picture (pun intended)?