(E) At any time before the filing of the certificate of merger or consolidation under section 1701.81 of the Revised Code, the merger or consolidation may be abandoned by the directors of any constituent corporation, the general partners of any constituent partnership, or the comparable representatives of any other constituent entity if the directors, general partners, or comparable representatives are authorized to do so by the agreement of merger or consolidation. The agreement of merger or consolidation may contain a provision authorizing the directors of any constituent corporation, the general partners of any constituent partnership, or the comparable representatives of any other constituent entity to amend the agreement of merger or consolidation at any time before the filing of the certificate of merger or consolidation, except that, after the adoption of the agreement by the shareholders of any domestic constituent corporation, the directors shall not be authorized to amend the agreement to do any of the following:
(1) Alter or change the amount or kind of shares, interests, evidences of indebtedness, other securities, cash, rights, or any other property to be received by shareholders of the domestic constituent corporation in conversion of, or in substitution for, their shares;(2) If the surviving or new entity is a foreign corporation, alter or change any term of the articles of the surviving or new foreign corporation, except for alterations or changes that could otherwise be adopted by the directors of the surviving or new foreign corporation;(3) If the surviving or new entity is a partnership or other entity other than a corporation, alter or change any term of the partnership agreement or comparable instrument of the surviving or new partnership or other entity, except for alterations or changes that otherwise could be adopted by the general partners or comparable representatives of the surviving or new partnership or other entity;(4) Alter or change any other terms and conditions of the agreement of merger or consolidation if any of the alterations or changes, alone or in the aggregate, would materially adversely affect the holders of any class or series of shares of the domestic constituent corporation.