(1) This rule applies to the dismissal of—
(a) a proceeding, either generally or in relation to any cause of action; or
(b) a claim, or any part of a claim, for relief in a proceeding.
(2) Subject to the order for dismissal, the dismissal does not prevent the plaintiff in the proceeding from starting a fresh proceeding or claiming the same relief in a fresh proceeding.
(3) However, if the dismissal follows a decision on the merits, the plaintiff must not claim any relief in relation to the same cause of action in any subsequent proceeding in a court.