Australia's Kerkanya was canceled in the 1990s for lack of funds after successfully demonstrating inertial guidance. It was planned also to incorporate GPS. Companies later bought by Boeing acquired rights to the wing kit, which has since been simplified by eliminating taper, presumably at some moderate cost. It is unclear when the decision was made to drop the Australian guidance system and instead use the JDAM unit, but Kopp privately urged the U.S. Air Force and manufacturers to do exactly that in 1997, writing that persisting with a separate development “strikes me as a case of unnecessary duplication.”
Among the challenges in developing the wing kit was accurate transonic wind-tunnel measurement. Although much of the original electronics work was not used, it promoted expertise that the Defense Science & Technology Organization could use on other projects.