I have a video but I recorded dialogue separately . I've imported the dialogue and synced it with the video but now I want to cut and edit and rearrange but when I do that the audio gets all messed up. Is there a way that I can merge the audio file and video file so when I move/cut/split it will all do it together? 

I've looked up ways to do it and someone told me to highlight them both and then click "clip" and then "combine" but I can't find the "clip" option. 

Thanks!