Microphone Gate Threshold Setting Resets

I always set my microphone gate threshold option to “OFF” because it works best with my microphones. But every time I shut off the mixer and turn the mixer back on my setting was not saved and the microphone gate threshold defaults to “-50”. Is there a way for the setting to stay set on “OFF” so I don’t have to go in the microphone options and change the setting each time I power on the mixer?