Plank has many scratches that go right through him, in the beginning of the movie, but when Plank is presented from the back, some scratches are different and some are gone.
Ed removed his left shoe at the beginning of the movie to barricade his room from the angry kids following him, and was seen wearing only one shoe for the entire movie. However, at the mud valley scene, Ed's left shoe returns.
Edd says that he can't sleep in an unlabeled environment. However, the previous episodes 'A Glass of Warm Ed', 'Hot Buttered Ed', 'Scrambled Ed', 'Momma's Little Ed' and 'Rambling Ed' show him sleeping soundly with no label in sight.