User blog comment:Wrath022/Chapter 516: The Truth About Enchantment, Review/@comment-112.207.204.172-20170104072257/@comment-7418318-20170105144623

Isn't "while so much has occured" a pretty good reason for them to be ignored?

There is so much going on, at times even in three places at the same time. There's already little enough page-space to go around for the relevant parts, so I can understand why Mashima wouldn't want to dedicate space for something that's not relevent at the moment just to show he hasn't forgotten about them.