Hi,
Delta - your transports won't disturb your delta at prod.
if you need to you can take back up and later you can move your changes to prod.
Without back up, just design your flow and move to quality. lets check the all moved transports, objects, data and delta settings. if there is no change then its fine. you can move your transport prod. that will give the confirmation about transports won't distub your delta.
Recently i have done the same work(adding required field to dso,cubes and MP, i added info object directly to cube/dso) i didn't use remodeling.
Thanks