(2) Where its articles limit the number of authorised shares of a class or series of shares of a company and issued shares of that class or series have become, under subsection (1), issued shares of another class or series, the number of unissued shares of the first-mentioned class or series shall, unless the articles of amendment or reorganisation otherwise provide, be increased by the number of shares that, under subsection (1), became shares of another class or series.