What version of Premiere Elements, and what computer operating system?
When you have a file with video and audio components, I know of no way to import audio only. And your file with video and audio components will arrive in the Timeline with its video and audio linked (Video 1/Audio1). Lots of ways to export without audio.
Once the video audio are in place on the Timeline, you can right click the file and select Delete Audio.
Please consider and give more details.