3-pos switch for Parachute in 4.2 RC1

I’ve been setting up a parachute in 4.2 RC1 and playing with the switch configurations. With the parachute parameters enabled, and the RCx_OPTION set to 22 (Parachute release) everything is fine. When I change RCx_OPTION to 23 (3-pos switch) and reboot I noticed that CHUTE_ENABLE reset to 0, and all the parachute parameters disappear. I did bench test the system and it still appeared to work with CHUTE_ENABLE,0. When I reset the RC option to 22, and CHUTE_ENABLE,1 all the parachute parameters reappeared as I had set them before.

This is the first parachute I’ve set up so I’d like to know if this behavior is normal or not?