(2) Subject to any provision to the contrary in the principal Act of the affected district or city and subject to the process of transfer of territory:
(a) Territory within a city may not be included within or annexed to a district without the consent of the city council;
(b) Territory within a city may not be included within or annexed to another city; and
(c) Territory within a district may not be included within or annexed to another district subject to the same principal Act. [Formerly 199.515; 1975 c.361 §2; 1979 c.374 §2; 1981 c.748 §18; 1983 c.336 §7; 1989 c.92 §17]