I am trying to layout the floorplan for a bathroom remodel. The bathroom
had a tub & standalone shower. My question is if I can swap uses for the
drains, using the old shower drain for the tub, and the old tub drain for
the shower?

I would think this would be a nobrainer, but since I'm new to the world
of plumbing, I thought I'd get some opinions...

Thanks,
Jason