That's why i'm actualy quite doubtfull about the whole idea of Moira X being a reset button. Especialy since i'm not convinced her powers work the way she or Hox/Pox claim. Infact i somewhat expect the worlds of X2 and X3 (Life 9 and 6 respectively) to still somehow come back into play eventualy.
Though i don't think the current status quo is long for the world either, since everything feels designed to break appart eventualy under some strain of the story events and shocking reveals about the nature of everything right now.
But i don't think it's getting magically erased.