For me, this is one of those instances when the score feel terribly wrong. Re-using and re-arranging themes is perfectly ok. However, when Williams literally reuses cues (to the point that it almost sounds like it's editorially tracked music) that don't even have any thematic significance, it takes me out of the movie. He never used to do that, but the last two sequel scores do have quite a bit of "reused" music without any reasons. That was one of the mystery motifs that appeared a couple of times in Clones (both in Kamino and in Tatooine), and that was similar to other mystery of other Williams scores of that era. It didn't have anything to do with the scene in Episode IX.