Fake episodes among real ones (The Bugs Bunny Show)

All the episodes in seasons 4, 5, 6 and 7 are fake. All of them need to be deleted.

The rest of the episodes (in seasons 1, 2 and 3) are real.

Keep the parent series. Keep the rest of the episodes. Delete all the episodes in seasons 4, 5, 6 and 7.