Score Title

Musescore 3.6.2. I created a score and changed the title of the piece part way through. I finished up, exported parts and the old title is on the top line of all the parts. I can't find anything anywhere that will globally change it to the new title and it's tedious to change the title on the top of every single part. In Score Properties, I've set the "movementTitle" and "workTitle" but it continues to show the old title. I can't find anything anywhere that displays this old title so I can change it.

Surely there HAS to be somewhere that sets the title for the piece!