Auto-Redirect A Post Page

Hi,

I'm integrating our CS Cart with a 3rd party payment provider, MOL. After successful payment in the MOL payment page, they POST the payment transaction detail in the following URL.

/index.php?dispatch=payment_notification.return&payment=molpay&order_id=67

The issue occurred in the fn.dispatch.php where it auto-redirect the page by to itself with a HTTP 302. As a result, the POST values from MOL is lost. Even the payment_notification.return controller returns empty value.

Does anyone know why the CS Cart auto redirect itself?