My Novus is about to upgrade to Nexus but I still have a Sphere Scroll to finish and chosen the Sphere Scroll Novus from the NPC. (For modifying the stats).

What happen if I upgraded to Nexus, would the Sphere Scroll (Novus version) be invalidated to use?

This confused me because from the NPC quest for the relic shows 2 option for Sphere Scroll. One for Novus and one for Nexus, I thought the reason they split it because they got to have significant differences.