Check if they are enabled in the airplane configuration page. By default they are.
Yes, they are.
Following a small part of the aircraft GSX config:
As I said, it happens with the Carenado ATR and Majestic Dash only.
[aircraft]
nosegear = 13.02
refueling = 1
battery = 1
pushbackraise = 1
pushbackdummyevent = 0
pushbackcheckengines = 0
iscargo = 0
trafficcones = 1
preferredexit = 0
wingrootpos = 2.56 -0.47 1.50
wingtippos = 12.39 -0.41 1.85
fuelpos = 10.27 -0.27 1.56
waterpos = -0.00 -12.73 -0.37
lavatorypos = -0.00 -12.49 -0.36
engine1pos = -4.40 -0.37 0.78
engine2pos = 4.40 -0.37 0.78
engine3pos = 0.00 0.00 0.00
engine4pos = 0.00 0.00 0.00