In the season 3 episode "Luck of the Fryrish", we learn that Fry's brother Yancy had a kid named Philip, after his lost brother. However, in Bender's Big Game, we see Fry travel back in time and return to his life for 12 years before being hunted down by Bender and freezing himself in his ex-girlfriend's cryotube. Doesn't this mean that the history of Fry's nephew didn't happen as we saw it in Luck of the Fryrish?