Man, there are 30 to 50 different deliverables.
Tashi Trieu goes about it on his website.
They are all adjusted differently.
With T2 in 4K, the framing is different between the UHD and the Blu-ray.
So there's bound to be problems. That's why some mixes are corrected, other not, within the same...
That was the december DCP I guess.
As you probably noticed, not one deliverable on these films is 100% matching.
You have differences in framing, mixes etc.
Well to complicate matters even more, the DCP of The Abyss SE is the same scan but without Park Road destructive pass. Mostly obvious in VFX shots, where different footage blended seamlessly around objects. It's true though the original scan from 10 years ago, has a different color timer and...
There's no conundrum. You should keep all your collection, as often, old versions have an edge over re-release, like untouched audio mixes, or bonuses etc.