Way to combine meshes at runtime and preserve lightmaps?

Hi,
I'm wondering if there's currently a way to combine meshes at runtime that have already been lightmapped, and keep the lightmaps on them when combining the mesh?

Thanks

 

I tried to do this myself recently. Found the coding was too much of a pain in the butt. Bought this instead while it was on sale for $25:

https://www.assetstore.unity3d.com/en/#!/content/5017

Better to spend money than reinvent the wheel.

 

I have MeshBaker but it says it can't combine the meshes and keep lightmapping in Unity 5, only Unity 4, does it work in Unity 5?

 

Wow, it worked, thank you so much!