Board Thread:Episode Discussions/@comment-25319479-20160526105603/@comment-1512913-20160526173139

Again, in the manga they didn't know about Kaguya. And in the manga BZ even says they sealed the Ten-Tails, which was Kaguya, not that they sealed Kaguya and separate Ten-Tails magically turned into 9 Tailed Beasts.