Just don’t know to be honest, its been shown since star wars 77 and especially over the last two movies that its really being changed and evolving on the move. ie:It really didn’t have an arc. Each movie is being written on the fly. I really think that’s why that scene was thrown on the end of Solo.
But what do I know?I wouldn’t necessarily say that the sequel trilogy is being changed in between films. I believe that J.J. set up that Rey’s parents were nobody, and that is something that Rian Johnson carried over into The Last Jedi. I also think that J.J. intentionally also set up the romantic relationship being developed between Rey and Kylo Ren.
I can see this. Abrams originally was handling the first film more like a series pilot - he was not expecting to come back and expected others to continue the story. So I can see where he and Kennedy would have plotted the arc of the trilogy. And we know some things were held over from George’s version. I think the course of IX was set during the production of TFA, though the details of the story were up to whoever did it. I hope at some point we get to find out what plot points were set at what time. It would amuse me to find out that some of the plot points in TLJ that people are so pissed about came from Lucas or Abrams.