It’s based off the screen play I believe. So sounds like a filming change, wheter it’s because of colour clash or other considerations?

In episode 4 Vader drops from above in Leias ship instead of walking through a misty door, light sabers are “wrong” colours as well. So that leads me to design choices or construction issues mainly.

Episode 3 felt an entirely different story with cut content though, so it does vary. The Jedi council teased that eternal life was available in the archives, that’s why Ani was so upset and went to the emperor to try and save Padme. Entirely different vibe towards Ani the whole book.