APM beta-testing

I would like to say great work to everyone at Emlid, I have been configuring my s1000+ frame from a pixhawk setup to RPI 3 and Navio2. I noticed at the bottom of the APM page in documents there is a disclaimer about auxiliary options…

WARNING Auxiliary function switches on channels 5-8 are still not supported and could lead to erroneous PWM generation on motors’ channels and that’s why we do ask to NOT SET AUXILIARY FUNCTION SWITCHES TO RC5…8.

Does this mean rc channels 5-8 or the pwm outputs 5-8 on the navio board? I have 8 motors so my avalable auxiliary outs start at 9 to 14. Can I still setup camera trigger from my transmitter channel 7 and connect it to pwm 9?