Shareholders' preemptive rights in existence on July 31, 1987 (or on the date specified by a resolution of the board of directors of a corporation adopted under IC 23-1-17-3(b)), under prior law continue in effect as created under prior law. However, if the corporation's articles of incorporation are amended under this article with respect to preemptive rights, then all shareholders' preemptive rights are subject to this article after the amendment is effective.
IC 23-1-54-2