The Star file rule involved states:
<font face="Verdana, Arial, Helvetica, sans-serif" size="2">
122N . * DATE/TIME AND ONEWORLD CARRIER CHANGES ARE
123N . PERMITTED WITHOUT REISSUE PROVIDED ORIGIN,
124N . DESTINATION, CONNECT POINTS AND INVENTORY REMAIN
125N . THE SAME. </font>
It is possible but highly unlikely that QF may ask you to have AA endorse the ticket over to them. Either way it shouldn't cost you anything but maybe a little extra time at the airport.