The original Blu-ray is a recycled DIVIMAX transfer supposedly. In other words, it's wrong. To my eyes, lots of detail is missing and the colors are way way off.
The new disc, to me at least, is more representative of what that LD looked like. According to the jacket, that disc was scanned from a "35mm Panavision print minted from the original negative."
The audio was from the "35mm magnetic master mono soundtrack."
I'd love to get my hands on a sycn'd track of the LaserDisc. It sounds wonderful on my system. I wish I had the tools and talent to get a bit perfect rip.
I sadly don't have the 1999 disc any longer for comparison.