(8) Any plan of merger or share exchange may authorize the board of directors of each corporation party to the merger or share exchange to amend the plan at any time prior to the filing of the articles of merger or share exchange. An amendment made subsequent to the approval of the plan by the shareholders of any corporation party to the merger or share exchange may not:
(a) Change the amount or kind of shares, securities, cash, property, or rights to be received in exchange for or on conversion of any or all of the shares of any class or series of such corporation;
(b) Change any other terms and conditions of the plan if such change would materially and adversely affect such corporation or the holders of the shares of any class or series of such corporation; or
(c) Except as specified in s.
607.1002 or without the vote of shareholders entitled to vote on the matter, change any term of the articles of incorporation of any corporation the shareholders of which must approve the plan of merger or share exchange.
If articles of merger or share exchange already have been filed with the Department of State, amended articles of merger or share exchange shall be filed with the Department of State prior to the effective date of the merger or share exchange.