I am Mosaic and am looking to book a cheap points ticket from NYC (in this case HPN) to NAS that has a stopover in MCO. It is considerably cheaper than the current direct flights. My question is - if I book the flight with a stopover, can I get a same day change w/in 24 hours of flight to one of the direct flights - either LGA -->NAS or JFK -->NAS? If I can do that no problem, I'll jump on the cheap one right now, but wasn't sure if the stopover screws me for the same day change.

TIA