>>87681385 But that was before every idiot with time travel abilities started having random time tourist trips for the heck of it in that Battle4theAtom story.
The Future Brotherhood came back first to pressure the O5 into returning, but they had come from a future where the O5 didn't return, which is odd because the Future Brotherhood's intervention spooked Jean into running, when Babyclops and Jean were on the run Magik, who had decided to spy on the future to see what was the deal, discovered that the Future Brotherhood wasn't who they said they were, so she decided to tell someone and recklessly chose to take BabyBeast and BabyBobby into the future, when she returned she came back with the Future X-Men, who had all lived through this before, but without a Future Brotherhood intervening, meanwhile Jean was having a telepathic paradox battle with her Evil Future Jean self, now at that point two of the O5 were still capable of timetravelling, but when the Brothehood captured all O5 and tried to send them home, the time machine wouldn't take them, somehow between Jean fighting her future self, Bobby and Hank timetravelling using Magik's portals, and the Future X-Men and Future Brotherhood altering the history that made their future timeline, the O5 became dislodged from the normal rules of timetravel and can no longer be sent back.
This possibly means that if Babyclops dies now it won't effect jack shit.
Because he and the rest were still within their own unaltered timeline before that Future Brotherhood with a Future Jean showed up, but in a later appearance the Future Brotherhood didn't have a Future Jean in it's membership. Though they did try to fake it just to troll Jean.
So the timeline they're in now isn't the same timeline they were in when Babyclops was killed and Adultclops vanished. That's why they can't go back.