Board Thread:Spoilers!/@comment-6036560-20151019182409/@comment-24674051-20151022134923

Slight difference between Henry and Dylan.

Henry is one of the Main characters, and his character is 'growing up' on screen. (though admittedly not quite as fast as he is growing up IRL). Dylan is specifically the Younger version of Baelfire, The adult role is Michael Raymond James. There have been, as I understand it, some physical changes in Dylan (typical as boys grow up) that would make it difficult for him to reprise the Younger Bae.

The same would probably hold true for Bailee Madison (The young Snow White from earlier seasons).