If the committee, personal representative, heir, or devisee of the plaintiff or appellant who was a party, or of the decedent whose personal representative was plaintiff or appellant, shall not make a motion for substitution of parties under the applicable Rules of Court within a reasonable time after there may have been a suggestion on the record of the fact making such motion proper, the suit of such plaintiff or appellant shall be discontinued, unless good cause be shown to the contrary.
Va. Code § 8.01-18