As I learn more about the PID tuning this question got stuck to my head.
I have DJI Naza as well and Naza software lists all the parameters under two main Gain groups:
2. Attitude Gains
Under the Basic Gain, you have Pitch, Roll, Yaw, and Altitude
Under the Attitude Gain, you have only Pitch and Roll
So are there all P gains that we are adjusting there? And if so, do the Basic Gain correspond to Rate_P of APM code and Attitude Gains correspond to Stabilize_P?