I see...
I just realized, since the last update (?) the AAR probe extend/retract switch on the FA-18 works as it should, if mapped to the TM Warthog Throttle EAC switch. Which means if I switch up Warthog switch, in-game probe switch also switches forward and probe comes out, if switch back down, in-game probe switch flips back and probe retracts. Previously I had to cycle WH switch up-down to extend and same for retract.
Interestingly however, if I map my in-game Launch Bar switch to my RDR ALTM on the Warthog throttle, it works, but inverted. If I switch Warthog switch up, in-game Launch bar switch flips down, and if I switch WH down, in-game switch goes up. Can it be reverted?