exporting animation

I would like to use blender to animate, and another program to render out the scenes. it seems to allow me to do this is if I save it as a .fbx file.

the problem is that when I import the file in lightwave, the blender armatures are exported as objects, which move as they should, but their movements no longer deforms/affects the mesh, (they exported as objects, not bones) so the entire animation is lost- my character just stands there in his default T-pose. how do I export the scene so that the animation is preserved