Exporting DXF: Shapediver changes Layer naming

There is an issue with Shapediver when I export a DXF for download. It is changing the layer naming specified in the GH file.

These are the layers named in the GH file:

And when outputted to DXF, the colons have been changed to underscores:

Is there an issue with the characters allowed?

Best regards,

Paolo

From Autodesk’s documentation, it seems that colons are not allowed in layer names. The conversion to underscore must be a Rhino default behaviour. I tried to export to 3dm using colons and did not have issues there.