This is very confusing.
And as above, QUANTAS does not exist. And if you're going to post in an Australian forum, use Australian date formats.
You asked QF to reaccommodate you to PER as your final destination which they did due to a misconnect. You did not contact AA to alter your booking to PDX-LAX-BNE-PER which would remain within the 80,000 limit with connections <24 hours. QF would not advise you on the use of your AA miles.