Is it just a question of the search index catching up? Eg if you kill the app, does it help? Or if you switch to a different project and back, does it refresh?
I am quite keen with Agenda, on the whole, and feel myself adapting quickly to its structure. But if “To Do” doesn’t show every checklist item from across the database then I am in severe difficulties…
And to compound the confusion, I just created a new note with a check list, and that did appear in To Do. But other notes with check lists remain missing.