now I am more confused ?
Maybe I did not write in the right away my issue ( I am not a native English speaker)
Well, I master in the DAW in -3dB pan law option and finally testing my master in mono inside my DAW and everything sounds good to me. I export the stereo track using -3dB pan law option with no change. When listening the exported track with any media player and set to stereo then everything is the same as inside the DAW, but when press mono in my audio interface then it is clipping. The same mono audio is not clipping inside the DAW. I hope I wrote it in the right way....