Yes, you will receive 200 points for your April UY on April 1 2009.
But, as stated above, the points you got in October were probably developer/incentive points, NOT BLT points. They couldn't give BLT points for April 2008 UY since the resort does not open until August 2009. So check your contracts to see exactly what you got.
When I bought in December with a June UY, I received developer/incentive points, (with my first BLT points coming June 2009). The developer/incentive points are only good at SSR, RCI, and DLR hotels, cannot be banked, can only be booked 7 months out, and have to be used before Oct 3 2009. These points do not show up on the
DVC member website, nor does the reservation made with these points.