Arbitrary Parameter Not Respecting CANNOT_TIME_VARY and COLLAPSE_TWIRL

Hi gang;

I've got an Arbitrary custom parameter which I've assigned the flags (among others):

PF_ParamFlag_CANNOT_TIME_VARY

And

PF_ParamFlag_COLLAPSE_TWIRLY;

With the arb parameter, I understand these go within the function body like so:

PF_ADD_ARBITRARY2("Custom Parameter",
	UI_BOX_WIDTH,
	UI_BOX_HEIGHT,
	0,
	PF_PUI_CONTROL | PF_PUI_DONT_ERASE_CONTROL | PF_ParamFlag_CANNOT_TIME_VARY | PF_ParamFlag_COLLAPSE_TWIRLY,
	def.u.arb_d.dephault,
	PARAM_DISK_ID,
	ARB_REFCON);

However, the keyframing icon still appears and the parameter twirl still defaults to open. CANNOT_TIME_VARY should make the parameter non-keyframable and COLLPASE_TWIRL should start the parameter closed.

Are there different flags that should be used to achieve this with arbitrary parameters?

Thanks,

-Richard