(A) To be effective, an agreement of merger shall be consented to by all the members of a constituent limited liability company.
(B) After the agreement of merger is approved, and at any time before a certificate of merger is delivered to the secretary of state for filing under section 1706.712 of the Revised Code, a constituent limited liability company may amend the agreement or abandon the merger:
(1) As provided in the agreement; or
(2) Except as otherwise prohibited in the agreement, with the same consent as was required to approve the agreement.