Indeed, Anwyl was the only Labor MP to lose her seat at that election. However, as a measure of how the ground had shifted from under Labor, Anwyl only led Birney by eight votes on the first count, and lost when One Nation preferences flowed overwhelmingly to Birney.
While Anwyl was the sole Labor MP to be defeated in that election, she only managed to secure an eight-vote lead over Birney on the first ballot, ultimately losing as One Nation preferences heavily favored Birney.