Severability; savings clauses.

(a) If any provision of § 47-2005 or this subchapter, or both, including any amendment made by § 47-2005 or this subchapter, or both, or the application thereof to any person or circumstance, is held invalid, the remainder of the provisions of § 47-2005 or this subchapter, or both, including the remaining amendments thereof, and the application of such provision to other persons or circumstances shall not be affected thereby.

(b) The repeal or amendment by § 47-2005 or this subchapter, or both, or any provision of law shall not affect any act done or any right accrued or accruing under such provision of law before March 4, 1981, or both, or any suit or proceeding had or commenced before March 4, 1981, or both, but all such rights and liabilities under this subchapter and § 47-2005 shall continue, and may be enforced in the same manner and the same extent, as if such repeal or amendment had not been made.