I would suggest you wait till the new routing's points to be credited, and afterwards if you think you would have gotten more with your original routing, then email MPO the missing mileage form with your e-ticket. I've done that a few times by citing
http://www.asiamiles.com/am/en/site/...DropDownList#6 and have been successful.
2.If a member's air travel is disrupted due to reasons beyond the control of CPA or an airline partner (for example, extreme weather conditions/acts of God) and the member is forced to change carrier, mileage credits on the disrupted segments of the purchased ticket will only be credited to the original itinerary. In such circumstances the member will need to mail or fax the original passenger receipt and boarding pass to AML.