The Sphere builders went back to the 22nd Century because they were defeated in the 26th.It was from a future where the Sphere Builders were not defeated in the 22nd century.
Or at the very least they accelerated their plans in the 22nd because of their 26th century defeat.
Either way, Daniels said their manipulation of the Xindi to attack Earth was because they saw the battle where the Federation defeated them.
No, it was a possible future. It changed when the Sphere Builders accelerated their plans in the 22nd Century after witnessing the Battle of Procyon.The J was from the actual future not an alternate universe or “possible” future.
That's not to say the Ent-J couldn't still exist as it appeared in ENT, we just have no evidence that it does.
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