I also have quite a few "Original" miles and was a bit confused last week when I saw that language on the UA website. I called the MP Service Center about it and was told by the rep that it was "his understanding" (doesn't THAT just inspire a whole heap o' confidence!) that at some point after the December 15th date, the original program miles would simply be combined with those in the current program, subject to the same 36 month activity rule as all currently accumulated miles.
Of course, it probably wouldn't hurt to call again (1-800-421-4655) to see if everyone else at MP has the same "understanding."
[This message has been edited by cfrmn (edited 08-25-2000).]