Part of an audio track has been muted

Ray_Mclaine_ne

Part of a clips audio tracks is being muted.
I think I caused it by my editing.

When I play the clip in the clip preview all the audio is there. But when I play it from my timeline it mutes half way through the clip.
At the same time the preview program switches To sequence view.

borate

If a clip has been muted on the timeline there will be a red X on its speaker icon. Click on it to UNmute.

Did you apply an audio effect to the muted clips/s?

You say "when I play the clip in clip preview all the audio is there." Do you mean when you play it in the BIN (top-left)?

Have never seen an instance where playing the sequence (on the timeline) switches modes midstream.