Motion 4 progressive project export problem

I am using Motion for couple of months , I am working for a XDCAM EX 1080 25p project, and everytime I output alpha Animation codec mov from motion, I put it into FCP7? I found that the animation mov is odd field, some I put it in progressive timeline , the graphic quality have some problem, even I change to motion project to custom 1080p , the export animation mov still odd field, anyone have the same problem ?