Chamberlain-Creighton was released from prison in 1986 after Azaria's missing jacket was found near a dingo den. She was eventually awarded more than $1 million for wrongful imprisonment.
Linder said he understood why the Chamberlains would want to finally quash any lingering suspicions that they played a part in their daughter's death but said some would always have doubts.
"These things do go on, and people tend to want to have something clearly stated in the record that clearly affirms their viewpoint," he said.
Michael Chamberlain wrote on his website that he was "a victim of media manipulation and systemic bureaucratic corruption from the Northern Territory." In 2007, he made headlines for speaking out in defense of the parents of missing British girl Madeleine McCann, who, too, faced down suspicions that they had killed their daughter while on vacation.
"That sounds like a mirror image, doesn't it," Chamberlain-Creighton told Australia's Herald-Sun at the time. ""Lie and tell us you did it, and you can go free, tell us the truth and you can't."