Can someone explain how MU time travel works?
Usual trope is, young traveler can kill old himself (and not vice versa because paradox).
But now young version cannot die (because "he does not") until he's killed by himself?
If however teen Cable and his aged counterpart are canonically AU/ parallel timeline versions, then they're *different* individuals, and there's no reason why old Cable cannot or should not be resurrected?