The boundaries of a district may be changed and tracts of land may be excluded therefrom, in the manner prescribed in this chapter.
Neither such change of the boundaries of the district nor such exclusion of lands from the district shall impair or affect its organization, or its right in or to property, or any of its rights or privileges of whatever kind or nature; nor shall it affect, impair, or discharge any contract, obligation, lien, or charge for or upon which the district was or may become liable or chargeable, had such change of its boundaries not been made, or had not such land been excluded from the district.