Yes, that's actually what happened.

I did a MR, used OLCI for the outbound flight, but usually opt to print my BPs at a kiosk rather than at home. At the kiosk, it recognized the return flight was < 24 hrs, so it asked if I wished to check in for those flights too. I did.

On the return trip, for some reason they had to issue paper tickets. Maybe that had to do something with it? The flights posted as I was originally booked and stayed that way... never saw it as TYS-MEM-LAX on my account summary.

With my trip this weekend being Fri-Sun, I'll be doing my return check-in the standard way, not at the same time as my outbound flight.

Thanks for the info...