The sandcrawler matte shot was digitally recomposited for the '97 Special Edition. The indicator is that the 3-frames-animation of the beacon is a little bit different than the original in its appearance, and if you have sharp eyes you can also see that the crawler itself is placed just a tiny bit below the ridge in the original whereas in the SE it stands atop the sand dunes.
Top: original ('85 pan & scan) below: recomp (2004 pan & scan)
