(CNN) Angelina Jolie and Brad Pitt's custody dispute over their six children continues more than 20 months after filing for divorce. According to a court order obtained by CNN and issued last week, Jolie is required to tell their children that the "court has determined that not having a relationship with their father is harmful to them," that they are "safe with their father," and that having a healthy relationship with both parents is "critical." At the time, Pitt was married to actress Jennifer Aniston.