Well, "Lapti Nek" and "Ewok Celebration" were probably cut "because they don't exist". I treasure my dad's 1983 cassette(wish I could find the photo album) As for the Reebo track, it's possible it was just a snippet, and they felt it wasn't needed or something. The Empire OST has pieces that don't exist in the film or only in the SE(without the blasphemest looping). Also, "Victory Celebration" is completely different from the SE version. It sounds like a completely different arrangment last I heard it.

Welcom to the Boards, by the way.