Iowa Code § 633.444

The personal representative shall file a pre-answer motion or answer to a claim within twenty days from the filing of the request for hearing on the claim in the same manner as though the claim were a petition filed in an ordinary action, and thereafter, all provisions of law and rules of civil procedure applicable to motions, pleadings and the trial of ordinary actions shall apply; provided, however, that a restatement of such claim shall not be barred by the provisions of section 633.410.