I have this problem: Copying Vertex Normals
I have a head and a body that need to be separate objects, but they need to join seamlessly. Viewing them in object mode, I see the seam.
I can use the Data Transfer modifier or operation to copy "Custom Normals" from the body to the head with a max distance set so only normals near the seam are affected. Visually, that works fine. The seam is gone in the view.
But I need to export and when I go into the data model, the normal vectors haven't changed at all, even when I use the data transfer operator or apply the modifier. That is, bpy.object.data.vertices.normal doesn't change before and after the operation (where 1793 is on the seam). So what is the view using to show the transferred normal? And how can I get at that normal through the data model so I can export it properly?