Import the ZOOM mp4 file into your library then add it to the timeline ... then "ungroup" to separate audio and video...I just did a bunch of these myself. My ZOOM sometimes download 2 or 3 files but its only the MP4 one that you need. Good Luck!
If you haven't already done this, please check the Zoom settings for "Recording," and ensure the checkbox "Optimize for 3rd party video editor" is selected. (Needs to be done before recording in Zoom.)