Ala. Code § 11-44B-13
All persons holding administrative office at the time the mayor-council form of government is adopted shall continue in office and in the performance of their duties until provisions shall have been made in accordance therewith for the performance of such duties or the discontinuance of such office subject to any existing civil service law. The powers conferred and the duties imposed upon any office, department, board, or agency of the municipality by the laws of the state shall, if such office, department, board, or agency be abolished by this article, or under its authority, be thereafter exercised and discharged by the office, department, board, or agency designated by the council unless otherwise provided herein.
Any office, department, board, or agency provided for in this article with a name or with powers and duties the same or substantially the same as those of the office, department, board, or agency heretofore existing and the persons holding those offices, shall be deemed a continuation of such office, department, board, or agency and, until otherwise provided, shall exercise his powers and duties in continuation of their exercise by the office, department, board, or agency by which the same were heretofore exercised, and until otherwise provided, shall have power to continue any business proceeding or other matter within the scope of his regular powers and duties commenced by any office, department, board, or agency by which such powers and duties were heretofore exercised. Any provisions in any law, rule, regulation, contract, or other document relating to such an existing office, department, board, or agency shall, so far as not inconsistent with the provisions of this article, apply to such office, department, board, or agency provided for by this article.
Ala. Code § 11-44B-13 (1975)