(a) No class action shall be compromised, settled or discontinued without the approval of the court after hearing.(b) Prior to certification, the representative party may discontinue the action without notice to the members of the class if the court finds that the discontinuance will not prejudice the other members of the class.(c) If an action has been certified as a class action, notice of the proposed compromise, settlement or discontinuance shall be given to all members of the class in such manner as the court may direct.(d) Nothing in these rules is intended to limit the parties to a class action from suggesting, or the court from approving, a settlement that does not create residual funds.