I'm flying the red eye LAS-ORD (UA metal) / ORD-CLE (CO metal) tomorrow.

Yesterday my E+ aisle seat 10D was listed in the reservation for the LAS-ORD flight.

Today I check the reservation and it shows "--" seat for LAS-ORD.

So I go to the seat map - 10D is grayed out and I think I've been bumped outta my seat. 11D is the only E+ aisle left (no recline, grrrrr) and I select that. Hit Continue, and back at reservation (text) screen LAS-ORD shows the original 10D instead of the "--"... and 11D is now grayed out as well.