User blog comment:FairyRaven/Fairy Tail Chapter 465: 400 Years, Review and Commentary/@comment-24277053-20151207125720/@comment-1776824-20151208063334

No, the kids just never knew what time period they were in. The Dragons didn't lie, it's just Weisslogia and Skiadrum didn't want Sting and Rogue to feel like they had abandoned them, so they made it seem like they were killed instead. Igneel said they hid inside their bodies to not only stop dragonification, but to also stop Acnologia. The other four dragons also said their souls were removed from their bodies and that they were extremely weak. Ultimately, everything they said fits in with Zeref's account of events.