GoodMusician said:

It's hard to say. You could argue either way... without knowing the history of Boba, I would say that he was close to his father, and that wouldn't want to remove himself from his father by getting rid of his accent. But we could create a whole story line for why he changes it... lol

I've already been tempted once to write Expanded Universe for Revisited (like how did that Battle Droid get to the Sandcrawler?), don't make me think more about it. It'd also be interesting to learn more about the planet the Death Star is orbiting in ANHR, what was it called?