(a) A tax abatement agreement executed by a school district that is involved in consolidation or in detachment and annexation of territory under this chapter is not affected and applies to the taxation of the property covered by the agreement as if executed by the district within which the property is included.
(b) The commissioner shall determine the local revenue of a school district under this chapter as if any tax abatement agreement executed by a school district on or after May 31, 1993, had not been executed.