A court spokesman said the case had been adjourned to November.
It is understood that police are investigating whether Van Der Plaat should also be charged with sexual grooming.
Van Der Plaat was jailed for 14 years in 2000 for keeping his daughter as a sex slave, subjecting her to "bizarre and depraved" abuse, including rape, over several years in what a judge said amounted to "indescribable cruelty".
The Parole Board says his release was "non discretionary". Like 'Beast of Blenheim' Stewart Murray Wilson he had to be released before his sentence ended because he was dealt with before the Parole Act 2002 came into force.
After the latest allegations came to light, Van Der Plaat was recalled to prison until his sentence end date of October 11, 2014.
In making their decision, the Parole Board referred to security footage and still photos that appeared to show Van Der Plaat at the museum.
The board said a 2009 psychological report assessed him as being at least a medium to high risk of reoffending.
It also claimed he continued to deny his offending.
"He told the psychologist that the victim made up the allegations to obtain money for drugs," the parole board says.
"It was noted that his sexual arousal to sadistic acts had not diminished as he aged and there was no evidence of decreased sexual libido or sexual interest."
