Lightmaps Hardedge problems?

I am having a problems a lightmaps in Unity, I already play around with generate lightmaps UV's Advanced setting such as hard angle, pack margin, angle error and area error...I still able to see some of the hardedge after baking lightmaps.....I also checked the smooth group in 3ds max...Any idea...to have no hard edge when baking lightmaps with organic objects?

Thanks for yous helps....