Scrooge, Dewey, and Louie, followed by Webra Walters the reporter, run off to rescue Huey, leaving Burger tied up in the kids' room. But when Walters catches up to the others at the launchpad, Burger is sitting in the helicopter.
Just before the real Huey, Duey and Louie return from the movies, the Beagle Boy clones are wearing visors instead of hats. In every other scene all iterations of the boys are wearing hats.