User blog comment:Miskos3/Fairy Tail 529: Teacher, Review/@comment-1359322-20170401042941/@comment-25111584-20170401084902

It was specifically stated that Igneel vehemently opposed changing the wards' memories. And heavily implied that only Skiadrum and Weisslogia did so. The whole Anna thing is a clear-cut retcon. Misk's explanation, however, is a reasonable way of looking at it and satisfying fans' reservations, but it is still, once again, fans plugging up Mashima's plot holes.