Flash Transistion hd/sd problem
 

Ok i am on a hdv 1080 60i timeline. i insert a flash transition into a clip. on my preview monitor looks fine. when i render it in mpeg 2 or anything standard def. the flash effect will not stay 16:9 it goes 4:3 with the footage staying 16:9. looks like crap cause the whole screen goes white when i only want the footage to go white..any ideas. oh this is vegas 6.0.