It’s actually stitched-in with the blu-ray due to the unnatural colors. The only parts that were left in is some Endor scenes, the entire Sarlacc Pit fight and that’s about it.
Actually the main source was Harmy’s despecialized edition. Only time the blu ray was used if I recall were the following scenes:
-Most of the Rancor scene (updated effects)
-Rebel briefing scene
-Ending celebration