The budget section of the Department of Administration is hereby transferred to the Department of Revenue and continued as the budget office. The budget office shall act as staff agency for the Governor in the exercise of his powers and duties under section fifty-one, article VI of the Constitution of West Virginia and shall exercise and perform the other powers and duties of the budget office set forth in this article or previously conferred upon the budget section of the Finance Division, Department of Administration, prior to the effective date of this section in calendar year two thousand four, and set forth whether in article two, chapter five-a of this code, prior to the effective date of this section in calendar year two thousand four, this article or elsewhere in this code.