How do I export from multipipe to 3dm file?

I brought geometry to rhino from ansys and am working on it. I used a grashopper to fill the inside of geometry with the voronoi lattice structure. It’s in multi pipe form right now. I want to export it back to ansys according to 3dm file format, what should I do?

If I try to select geometry to export from rhino, only the existing geometry is selected and the multipipe I generated is not selected

right click on the multipipe component and click bake. select the layer. save file (or export only the geometry)