Merge all faces

Hello!

I have a mesh and i would like to join all adjacent and coplanar faces but it seems the only way to do it it with Mergeallfaces comand in Rhino

After using the MergeFaces component and join Brep there are still coplanar edges even  if there is a single closed brep.  Why is`nt it working like in Rhino.

The last one on the right is after baking and using the Rhino command