True, and with MAX you dont get the added benifits of being able to use tiling on the original texture (because the render to texture is a complete bake, where it bakes the lightmapping and the original texture to one texture)
Best thing to do is to use YAL to lightmap it, and write your own exporter to b3d.
Best thing to do is to use YAL to lightmap it, and write your own exporter to b3d.