Jeb I do not recall any discount for Xara 3D 6 owners to purchase Xara Designer Pro 6 or any other application. When Xara Xtreme Pro 4 and Xtreme Pro 5 were released I believe there was a free copy of Xara 3D 6 included.

I think there was a discount for Xara Webstyle 4 owners to upgrade to Web Designer 5.