The boundaries of any rural fire protection district organized under the provisions of this chapter may be changed in the manner prescribed by sections 18-10-02 and 18-10-03, but the changes of boundaries of any such district may not impair or affect its organization or its right in or to property; nor may it impair, affect, or discharge any contract, obligation, lien, or change for or upon which it might be liable had such change of boundaries not been made.
N.D.C.C. § 18-10-12