I am very confused as to what happened to Walter in 2015 when the timeline was reset to The Observers not invading. I understand his 2036 self went to the future with Michael. But there is no explanation of his what happened to him in the new timeline and this really bothers me. He can't be erased because then there would be no Peter. I like that it wasn't all explained because it keeps the mystery of the show going. I understand what the white tulip is, but what is the story in the new timeline of what happened to Walter - does anyone know?