Originally Posted by
StewieMac
He said that the D fare allows them to book into econ, and is cheaper than a full Y (all that was left for sale on the o/b) - it didn't book into biz because BA didn't have any D seats available.
It certainly sounds like you have been
"voluntarily downgraded": Most fares allow a TA to book into a lower class (e.g. Y), if the 'normal' booking class (e.g. D) is not available. Of course, the PAX would need to consent to it first. In this case, your TA (AA.com) made this decision for you ...