Parties are entitled to rely on orders of courts of competent jurisdiction. If adherence to an Order of a United States District Court or other court of competent jurisdiction, whether entered by consent or after contested litigation, in a case brought to enforce a Federal, State, or local equal employment opportunity law or regulation, is the basis of a complaint filed under title VII or is alleged to be the justification for an action which is challenged under title VII, the Commission will investigate to determine:

(a) Whether such an Order exists and

(b) Whether adherence to the affirmative action plan which is part of the Order was the basis of the complaint or justification.