31 U.S.C. § 1303
Effect of changes in titles of appropriations
Expenditures for a particular object or purpose authorized by a law (and referred to in that law by the specific title previously used for the appropriation item in the appropriation law concerned) may be made from a corresponding appropriation item when the specific title is changed or eliminated from a later appropriation law.
( Pub. L. 97–258 , Sept. 13, 1982 , 96 Stat. 917 .)