It should work all the way through, anything that doesn’t work all the way through is a bug or should be called out in the text as not quite working yet.
Actually that show/hide thing not showing new favorites is a bug that I didn’t notice and actually wind up fixing later in the book, but probably should just make correct in the earlier code.
Similarly on the Edit inside the Favorites, I think I get rid of that a little later when we make favorites have a different partial than regular concerts.
Thanks! Glad you are enjoying it.