If any motion in the nature of a motion to dismiss the complaint in its entirety is granted by the administrative law judge before filing his decision, any party may obtain a review of such action by filing a request therefor with the Board in Washington, DC, stating the grounds for review, and immediately on such filing shall serve a copy thereof on the regional director and on the other parties. Unless such request for review is filed within 28 days from the date of the order of dismissal, the case shall be closed. [51 FR 23746, July 1, 1986]