Prison bosses have claimed no women were put at risk by the decision to send a transgender rapist to Cornton Vale.
The Scottish Prison Service (SPS) faced uproar last month when it was revealed that Isla Bryson - who carried out two rapes while living as a man - was transferred to a women's prison following her conviction.
The rapist was later moved to a men's jail after the Scottish Government announced two reviews of how transgender cases in the prison system are handled.