Just revising my batch import script a bit, and I noticed that when exporting a file with sublayers from Rhino and then re-importing it, it loses the sublayer structure.
If it’s a dxf/dwg, the layer names of sublayers become
layer$sublayer, with the others it’s the Rhino sublayer notation
layer::sublayer which is literally translated…
I’m assuming the first “translation” of the layer tree structure occurs on export, but then the import process does not seem to recognize the separator symbols so all layers get imported as top-level layers.
Are there any workarounds to this, or is it just “the way it is”? I could try to parse the layer names once imported and try to reestablish the tree structure, but that’s a lot of work.
Sublayers work fine of course with standard 3dm files.