There are some discrepancies in the Sendings of Darkness.
Aerfalle's Letter (2000)
In Aerfalle's Letter, Aerfalle wrote, "The Second Sending came, and the world reeled." She goes on to describe events of the Empyrean Shadow War, including the Battle of Ayn Tayan. This text was written in July 2000.
In the Reign of Terror Teaser Part 3, Aerfalle said, "We had thought Amauxi fallen during the second sending. Had His Eternal Splendor seen so far into the future to hide him even then? And what of the sacrifices made while the outlanders did our bidding without coaxing? Had he foreseen the end of the fourth sending at their hand?" This text was written in October 2003.
Pack Bael'Zharon (2004)
In the Pack Bael'Zharon text, the Council of Sages wrote, "...Ilservian returned, transformed by some dark power into Bael'Zharon the Hopeslayer. This was called the Third Sending of Darkness." This text was written in November 2004.