Originally Posted by
frugal_flyer
Well, lo and behold, you were right, Fallen Plat. I logged in and use my confirmation code. My selected seat is listed, but only on the outbound flight.
So for future reference, I am now booking one-ways at the airport.

Must be something about the staff at CLE. I made a booking earlier in the week and was pleasantly surprised when she agreed to assign seats. Checked when I got home, though, and same as you -- outbound only. Oh well, better than nothing.