The Lotus and the Steel - S4-E13
Other mistake: When Wolverine is telling Xavier about his road rage incident, his jeep is missing its windshield. (00:03:20)
The Lotus and the Steel - S4-E13
Other mistake: The camera is out of focus when the Silver Samurai threatens the villagers. (00:09:35)
The Lotus and the Steel - S4-E13
Other mistake: The Silver Samurai slashes Wolverine in the back with his sword twice and Wolverine reacts in pain, yet there are no tears in Wolverine's shirt afterwards. (00:19:05 - 00:19:50)
Answer: Chris Potter, the original Gambit voice actor, did indeed quit the role in the 4th season. His last episode was The Phalanx Covenant Part 1 so it seems reasonable that Fox would limit the use of the character even though it was recast. It doesn't appear that Potter left the role due to animosity, he stated in an interview that he wished to play Gambit in the first live action X-Men film.
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