Ariz. Rev. Stat. § 29-2604
A. A plan of division of a domestic dividing entity may be amended either:
2. By the governors or interest holders of the entity in the manner provided in the plan, except that an interest holder that was entitled to vote on or consent to approval of the division is entitled to vote on or consent to any amendment of the plan that will change any of the following:
B. After a plan of division has been approved by a domestic dividing entity and before a statement of division becomes effective pursuant to section 29-2605, the plan may be abandoned:
2. If not provided in the plan, either:
C. If a statement of division has been delivered for filing with the appropriate filing authority, the plan of division may be abandoned only if the statement of division sets forth a delayed effective date under section 29-2605, subsection B, paragraph 4. A plan of division may be abandoned by delivering for filing with the appropriate filing authority on or before that delayed effective date a statement of abandonment, signed on behalf of the domestic dividing entity. A statement of abandonment takes effect on delivery for filing, and the division is abandoned and does not become effective. The statement of abandonment must contain all of the following: