8(4)The Registrar shall not be obliged to attend a hearing in a court, before a judge or before a board or tribunal to prove that a regulation has been filed, or for other purpose, unless the court, judge or person presiding, or appointed to preside, over the board or tribunal, orders the attendance of the Registrar and a copy of the order is served with the summons to witness or document requiring the attendance of the Registrar.