All orders for support entered on or after July 1, 1984, shall notify the person ordered to pay support of the mandatory withholding of income required under section 252D.1 . However, this subchapter is sufficient notice of implementation of mandatory withholding of income under section 252D.1 without any further notice. 84 Acts, ch 1239, §3 ; 85 Acts, ch 100, §4 ; 97 Acts, ch 175, §57 ; 2005 Acts, ch 112, §8