Flat pattern export drawing units set to inch instead of mm

Using CREO 13. I always design in mm, all my files are set up like that.

When I export a sheet metal flat pattern however (via the new direct export feature in CREO 13), the resulting DXF is inches (and the part is huge).

I noticed the DXF contains the following string:

$INSUNITS
 70
1
  0

The “1” is the file setting to inches. Should not be like that.

I don’t know where it comes from.

I have my config.pro set up as following:

pro_unit_length unit_mm
dxf_out_scale_views yes
dxf_out_drawing_scale yes

I also noticed I have a dxf_template.drw. When I open it I notice drawing_units is set to “inch *”, but when I change it it immediately goes back to “inch” when I recheck, so I can’t set it. Not even sure if that file has any relevance. 

Also checked some iso.dtl file, which is has drawing_units set to MM

I’m out of options right now. Any ideas?