Ya know, this is nothing new. Gone with the Wind, 70 years ago, had at least two versions (long vs. short). So did many other long movies that were eventually shortened. And of course, books have multiple versions as well, because authors frequently make changes during second & third printings. There's no such thing as a "one perfect version" in either the print or visual world, and never has been.

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Originally posted by: Trooperman
For Episode 1, supposedly there were a total of 5 different versions, counting the preview cut.