the new 4K transfer of mad men on HBO somehow does not have any of the post-production edits added in, which means you get stuff like this where you can see the crew member manning the puke machine after Roger has too many oysters lmao

Makes sense, that stuff was done after the master tapes.

So when they made 4k off the masters instead of upscaling, they forgot about all the stuff that was done.

It's the reason Lucas changed shit on re-releases, they had to redo a lot of effects, so the older methods were more expensive then the modern standards, and once some stuff is getting updated, adding more stuff you couldn't do back then doesn't feel like a big deal, because it's already different.