It still stands that none of the level select names ever got changed until the final level select screen was implemented. Only entries got removed (you don't want magazines visiting a void, now do you?). We can neither really confirm or deny that Mystic Cave and Dust Hill are the same. I never said that names were changed after title cards were implemented? The title cards are a 99% accurate way of knowing the name of a zone and if the early title cards are using the prototype names, wouldn't that pretty much mean Mystic Cave is "Dust Hill"? And if the title cards do state "Mystic Cave" it only further proves they didn't care about the level select screen.