Here's an article from the time of Redux that goes into every nauseating detail of every AN sound mix.
http://mixonline.com/mag/audio_apocalypse_redux/
Very technical, but a great read/resource. I just watched my 91 LD and will check out my 97 remastered disc to compare the PCM tracks. The sound was supposedly sweetened and remixed for discrete 5.1 on that disc but I don't know how the PCM was done. The back cover gives the same credits as the 91 mix so I think it should be the same one-but it might be different somehow.
After revisiting the LD, I think this master was reused for the original Paramount DVD release. Colors are the same and they're both the weird 2.00:1 ratio. The DVD simply uses the 5.1 created for the 1997 LD.
The Technicolor IB printing process used the original film negative to generate the three strips for coloring. the differences I noticed on the Complete Dossier are revealed on the Blu-ray as simply greater detail and clarity brought out by the best possible photochemical process. The Redux IP that was generated at at the end of the process for the new cut was just too detailed for the original Dossier DVD release. The Blu-ray source was exactly the same IP and because of great advents in technology, the result looks outstanding and completely replicates the theatrical experience.
What worries me is how the extra footage was cut in and how the 79 theatrical was recreated. I really hope it isn't another case of splicing new footage into the original negative and that the theatrical version is only recreated by editors.
I'm basing this stuff off of screencaps and reports of the new DTS lossless mix. Does anyone who has or seen the Blu have any insight? How's the sound?