Ah has so you were right Harmy a copy of the negative in 35mm.
Still it is a generation removed from the oneg, but still better quality i would imagine than a release print would have.
Less generation loss than the opticals and would not be so hard a match since the new elements were done as cgi in a computer.
If they had done and finished the effect in the traditional way the extra generation might have been an obstacle.
With an old school optical printer it would have been a nightmare but the new tools in 1996-1997 made it possible.
Never mind what they could do today with the newest of the new tech to actually restore the oot and not make a special edition or recomp stuff.