When the court grants a continuance in advance of the date of a scheduled trial or hearing, if the defendant acknowledges in writing, on a form provided by the Office of the Executive Secretary of the Supreme Court, that he promises to appear in court on the date and time of the newly scheduled trial or hearing, the court shall not require counsel or the defendant to appear on the date when the trial or hearing was originally scheduled. However, if the defendant is in violation of the terms of his pretrial release or has failed to appear at any court proceeding, the court may require the defendant to appear on the date when the trial or hearing was originally scheduled as a condition of any continuance granted.