S.D. Codified Laws § 1-26-8.1
If an act is passed by the Legislature which prohibits an agency from passing rules relating to a certain subject, any prior rule promulgated by that agency relating to that subject shall become void on the effective date of the act.
If a statute which authorizes an agency to pass a rule is repealed, or declared unconstitutional by the South Dakota or United States Supreme Court, any rule which was authorized by that statute is void unless there is another valid statute which also authorized the agency to pass that rule. If an agency's authority to adopt rules is transferred to another agency, and no provision is specified for the disposition of the first agency's rules in the legislation or executive order which made the transfer, the rules of the first agency shall be the rules of the second agency until they are amended or repealed.
SDCL 1-26-8.1