Hello,

I have been monitoring my flight from ATL to MCO for late next week. I chose it about a week and a half ago because when I booked there were 15 available FC seats to choose from on the B-757 flight and it is such a short flight I was only going to go FC if comp Diamond upgrade cleared. I know open F seats on seat map doesn't necessarily equate to unsold seats but its probably pretty close.

It was down to 14 open seats yesterday, and still offering a $400 upgrade to FC. As of this morning, all of the 14 seats are now all X' d out (not people'd out) indicating unavailable and the upgrade is no longer being offered. Why would this happen -perhaps equipment change coming? Thanks.