Not one JW ever actually dies "in the truth".
Following that line of thought one could also say that not one JW has ever been baptized having a full accurate knowledge of "the truth" beforehand because what is considered accurate knowledge, changes from year to year. Even the questions for baptism have been changed since I was baptized. This means that the questions I was asked and the answers I gave before my baptism weren't correct and thus my my baptism wasn't valid.