FC number on bmi booking

As MrStars and I are going to once again be within very close range of getting Au I put my foot down and booked a r/t business class ticket to Dublin on bmi. We will fly the first weekend of Sept. and we need the two points by Sept. 30. I booked through bmi's website and it gave me the opportunity to enter our VS FC numbers. Will the miles and TPs get automatically credited, or will I need to chase them down by mailing in boarding card stubs? Please share your experience as if I do need to mail them I want to do it right away so we can get the credit before we slip into October and miss Au.