I don't know if many noticed, but the saucer separation shot in EaF was replaced with CGI:
The same shot is used again in BOBW Part 2, but it looks much better. Look at how far they've come with the same CGI shot just a few months later:
The deflector dish has much more detail, the edges appear smoother and not obvious CGI, the grain applied makes it look more real, and the lighting looks more realistic.
When I saw that quick shot in the trailer, I thought they had located the original shot, but after comparing the two, it's still the CGI shot. Very well done.