W. Va. Code § 29A-1-3b: Void rules.

(a) If an agency ceases to exist, through the operation of law or by statute, any rules adopted or promulgated by the agency are void on the date the agency ceases to exist, unless the agency’s rule-making power and its rules have been transferred to another agency.

(b) Upon repeal or elimination of a statute that provides rule-making authority, any rule adopted or promulgated by the agency pursuant to that statute is void.