Sec. 6. (a) Except as provided in: (1) subsection (b); or (2) IC 31-14-19-1; a court may not retroactively modify an obligor's duty to pay a delinquent support payment. (b) A court with jurisdiction over a support order may modify an obligor's duty to pay a support payment that becomes due: (1) after notice of the petition to modify the support order has been given either directly or through the appropriate agent to: (A) the obligee; or (B) if the obligee is the petitioner, the obligor; and (2) before a final order concerning the petition for modification is entered. [Pre-1997 Recodification Citation: 31-2-11-12.] As added by P.L.1-1997, SEC.8.