Transcription missing

@Blue-Marble When multiple clips in a sequence have transcripts attached to them, the sequence transcript will use whichever is "highest" up on the audio track order to generate the transcript. In your second screenshot that entire selected clip along track A1 has a transcript and so it's used for that range. I understand the clip is silent there, but that's why you're seeing this. If you trim the A1 clip away you'll see the transcript from the clip on A2 now showing up in the sequence transcript.

There are a couple ways you could proceed here:

1. Export your separate audio files as a new multi-channel WAV file and re-import and transcribe it, making sure to choose "Mixdown" and "Separate speakers" when transcribing. This will transcribe the combined clip, detecting different speaker voices, and let you cut with the transcript directly in one clip in the timeline.
2. Add a marker to each of these source clips so you can line them up again later, then cut them each into their own sequence. In their own sequence, open the transcript and click on the Filter button next to Search to find all Pauses, then click Delete and choose Lift, then Delete all. This will cut away all the pauses without dialog, leaving gaps to keep the sync. Then re-combine the individual clips into your sequence again and you will have all the blank parts cut away and a much more representative transcript of all 6 channels.