SRCCOPY removes transparancy from BITBLITTED IMAGE

Question

BitBlt(meteor.main, 0, 0, meteor.img_width, meteor.img_height, meteor.image,  meteor.mask_x, meteor.mask_y, SRCAND);
BitBlt(meteor.main, 0, 0, meteor.img_width, meteor.img_height, meteor.image,  meteor.img_x,  meteor.img_y,  SRCPAINT);
BitBlt(buffer, 0, 0, 800, 600, meteor.main, 0, 0, SRCCOPY);

I know the first two bitblts make the transparancy, but the third removes it! What am I doing wrong here?