Have you tried Unmap From HotSwitch in H9 Control?  [In Windows, double-click the mapped HotSwitch ‘knob’ and select].  Problem with that is the ‘phantom’ HotSwitch bindings don’t always show up as such.

Well, sh–.  When all else fails, start over from another base preset (of the same algorithm).  First time around, you have no choice but to pick a [F]actory preset to modify.  Some of them have no embedded HotSwitch programming; many do.  It’s easily tested by loading a preset up, and tapping the HotSwitch.

As boring as this sounds, I’ve gone through many of the algos, and created a Blank Programming Template preset.  I add one to any Preset [L]ist that I post here.  As you’ve found, that can be more difficult than it appears.  There are those times when nothing seems to ‘stick’ on save [mainly Win8.1 & Android here].

Neutral parameters, 50:50 MIX, no modulation, no expression pedal or HotSwitch programming … just enough to elicit the core character of the algo.  Then I finalize any new ser preset off of that; even if the preset began life as another modified preset.  It seems to cut down on the freakishly frustrating surprises.