Bug or Feature: HTP fader doesn't think sub-intensity are an intensity parameter

Chauvet Strike Four fixtures in 9ch compound mode.
Master intensity at 30%, Sub intensities (for the 4 cells) are at 100%
Recorded on an HTP fader for houselights.

Pig + Release releases fader (as expected), HTP fader still brings up the Master Intensity (as expected). However the sub intensities are released meaning the fixture won't actually come up now with the HTP fader.
(Discovered this the hard way.... They were house lights.... BLAH!)
So is this intended behavior or would it make more sense for all the intensity parameter to be considered intensity by the HTP fader?