Board Thread:Naruto Discussions/@comment-25691159-20200529162803/@comment-9782468-20200530171949

The manga didn't contradict the databook here in any meaningful way.

Also I know the flames aren't eternal because if they were much of the country near Itachi and Sasuke's final fight would be cinders because Itachi died before putting them out, and you know Sasuke didn't care to put them out when he was on his revenge campaign.

Also, Amaterasu wasn't always cancelled, absorbed, or erased. It was also sealed, but more importantly sometimes it was just left behind, like when Naruto dropped V1 chakra with it on, or when Samurai's armor was left burning, or when the Ten Tails just dropped its burning bits.