Hi Burr - unfortunately that's a fundamental limitation of .obj files. OBJ format was designed maybe around 1990 or so, it basically predates the use of unicode and only supports plain ascii characters.

So that's just how .obj files work, they just can't contain unicode characters in them.

I do not know of any way to address it since it's a limit inherent in the file format. If you need every object name or style name character to come through into .obj format you would need to avoid having unicode characters in your names, sorry.

- Michael