But it makes literally no sense plotwise. The only point of Chapter 9, and 7 in a way, was to have the player think that Marle, Lucca and Robo "lose" in their quests, only to have Crono/Glenn/Magus save them without even knowing it, by undoing the whole timeline and regrouping with other versions of Marle, Lucca and Robo. Once CGM do it the Reptite timeline doesn't exist anymore.