I don't know, I've noticed the only special that seems to have butchered slightly is the thanksgiving special, as on the DVD, I noticed two scenes I've never before (until then), one where Snoopy and Woodstock go through a large chest and don their little pilgrim outfits, and then later after The Peanuts leave for Charlie Brown's grandmother, Snoopy and Woodstock stick around and enjoy a REAL Thanksgiving dinner.
Other than that, everything else seems to be the same, I know, because I have the Great Pumpkin special on an OLD tape (from 1993) I believe, and it had more stuff cut from it then than they broadcast today.