From what I understand they actually built a 1:1 Falcon complete with interior for Disney and filming. I could be wrong on that, but I would love to see it!
Rumor has it that the original quad station, cockpit and few other pieces have survived after Jedi. I chatted with a gentleman whose friend knows Lorne Peterson. During an exclusive tour of the archives back in the early / mid 90s, Peterson allowed a few photos taken of folks standing next to the cockpit. Whether it's the same one or Disney picked and pulled parts from and moved over to a new one???? I don't know.
I think they built several versions. The one of the moving rig has GOT to be all new!