Audio timecode does not display in timeline viewer

I have a WAV file with timecode embedded. When I view it in the preview window of the Edit screen, I can see the timecode in the upper right corner of the preview window. However, when I bring it into the timeline, the timecode counter in the upper right of the timeline window displays 00:00:00:00 as I scrub through the track. This is true whether or not the audio clip is selected.