I want to see is able to split the audio/video tracks

I used to be Adobe Premier user when it was ver 7. A rough test on Movavi I saw some of the essential features I used to have in Premier. ( while many 'free video editors' out there don't have) This personal version is way better than iMovie or MovieMaker. One feature I want to see is able to split the audio/video tracks. Sometimes we would like to cut the video but want to keep the sound.