Only a part of my audio file has been imported

So I edited my video I have 2 audio tracks 1 of them is working fine but the other one you can only hear the start of the clip you can see the peaks on track so yeah it's not an audio issue with the clip or software so I was gonna re edit the video again but when I imported the audio track again it doesn't import the whole thing I think that that's the issue 

Ps I checked the whole clip in my file and there is nothing wrong there

Can anyone help me thanks