cannot edit transcript in text-based editing

I will admit that I'm new to text-based editing here, but I've watched dozens of tutorials and went through settings over and over. 

I have a 30-min interview. My settings are to transcribe when added to the sequence. I did that, and it transcribed the interview. All good there. I know it's a text-based transcript, not a static one. I click all around the transcript, and it updates in the sequence. But if I highlight anything in the transcript, it does nothing. It doesn't delete from the transcript, it doesn't delete from the sequence. I can click the "edit active text" button and delete from the transcript that way, but it doesn't affect the sequence at all. 

I'm stymied. I went through step by step what it says in the tutorials, and nothing lets me edit the text and have it update the sequence. I have found zero answers to this in the community history, so I'm sure the issue is me, but I am at a loss for any other techniques other than the old school method of watching and cutting visually.

I'm using the latest version of Premiere and am on a Mac Mini, latest OS. 

Thanks.

Steve