Its probably treating it as a new mesh because the name is different on the copy then the original mesh (copy then edith the meshs name, past the pre-edited name to the copied mesh, export, then undo name changes). But yea needing to rely on a script to fix another script would be horrible, so hopefully someone has a…
copying the meshes is what I've been doing so far, writing a script is a great idea too, thanks! It's not really a long term solution however because goZ will create a new object in zbrush (it sees the copied mesh as a new mesh) which you'd have to routinely delete and manage (I'm not sure you'd be able to automate this in…