User blog comment:IamJakuhoRaikoben/Chapter 366: 1000 Souls, Review./@comment-5303512-20140109175213/@comment-4829046-20140111043140

No it doesn't work that way. Those guys were tied to one particular time portal. What happens to other portals is of no concern but I highly doubt Mashima will take that route(but I could be wrong)