As noted, I have the HD version of the US-edit and can make it available to someone with (a) more skills than I, and (b) ability to finish the project.
Likely the studios handed over that HD transfer to NetFlix not knowing what they were handing over.
That being said, you would only need the HD transfer to use as a reference point, and for the audio. All video could/should be taken from the DVD or Blu-Ray of the European Long Version. Far better picture.