(2) The exemption from execution or other process granted under this section applies to only 50 percent of benefits payable under this chapter if the execution or other process is issued for a child support obligation or an order or notice entered pursuant to ORS 25.501 to 25.556 or ORS chapter 25, 107, 108, 109, 110, 419B or 419C and the child support obligation or the order or notice is being enforced pursuant to a plan approved under Title IV-D of the Social Security Act. [Amended by 1982 s.s.1 c.30 §10; 1989 c.520 §3; 1991 c.115 §2; 1999 c.745 §6; 2003 c.572 §20; 2011 c.317 §3; 2019 c.13 §63]