An attested or certified copy of an order of adoption (or an original certificate of adoption) is a sufficient basis upon which to conclude that the adoptive parent owes a duty of support to the adopted child pursuant to 19-A M.R.S. §1504 and that the adoptive parent is a responsible parent within the meaning of 19-A M.R.S. §§2101(12), 2301 and 2304 as of the effective date of the order or certificate of adoption. An order or certificate of adoption does not lessen or negate any duty of support or support obligation owed by the child's natural parents up to the date of adoption.
10- 144 C.M.R. ch. 351, § 8-18