I believe that happened after the print/negatives were cleaned. You do notice lack of grain on the new DVD's, and it's wrong. Honestly. Watch Terminator, some scenes have quite a bit of grain, but that's okay. It's not a huge amount and it isn't anything to worry about. There are some scratches here and there that could have been removed, but gain removal??? If you can clean the film roll enough to reduce the grain, go for gold. Heck, even some level of digital grain removal might be considered acceptable, but trust Lucas to over-do it.