Is there a way to manually add a missing line to a transcript at a specific time?

Sometimes Premiere completely misses a line of dialogue, and I can’t figure out how to add it at the correct time. 

For example, someone says “That actually worked!” with several seconds of silence before and after it. Premiere recognizes the surrounding dialogue but skips that line entirely. There isn’t even a […] placeholder where it belongs—it’s just missing.

I can hear the words and mark exactly where they start and end with In/Out points. Is there a way to tell Premiere, “These words were spoken in this range,” and add them to the source transcript in the text-based editing tool?

Adding the words to a neighboring transcript segment doesn’t work properly because the nearest recognized dialogue is several seconds away. I want the missing line to be searchable and usable for text-based editing, with the correct timing.

Am I missing an option, or does this currently require exporting, editing, and reimporting the transcript? If there isn’t a direct way to do it, could Adobe add one?