This sounds like an issue with the editing software you’re using (and should probably be in the how-to section for better responses). I don’t know if you’re using software that doesn’t care about separate streams in the same file or if you’re not actually removing it the way you think you are, or if you’re simply not grouping the tracks so that your cuts affect both the video and audio. Or maybe you’ve got several languages loaded and don’t know it. Will need to know the software being used. But the audio is not embedded in your video track.