(1) Unless the articles or bylaws establish investor members' interests, a member's interest is a patron member's interest.
(2) Unless the articles or bylaws otherwise provide, if a limited cooperative association has investor members, while a person is a member of the association, the person:
(a) If admitted as a patron member, remains a patron member;
(b) If admitted as an investor member, remains an investor member; and
(c) If admitted as a patron member and investor member, remains a patron and investor member if not dissociated in one of the capacities.