(1) Except as provided in section 261(3), this act does not affect the duration of a corporation which exists on the effective date of this act. An existing corporation and its shareholders, members, directors, and officers have the same rights and are subject to the same limitations, restrictions, liabilities, and penalties as a corporation formed under this act, and its shareholders, members, directors, and officers.

    (2) This act does not affect a cause of action, liability, penalty, or action or special proceeding, which on the effective date of this act is accrued, existing, incurred, or pending, but the same may be asserted, enforced, prosecuted, or defended as if this act had not been enacted.