creo3 config.pro option documentation for: INTF_OUT_BLANKED_ENTITIES 
intf_out_blanked_entities
yes
*
, no
Controls the export of blanked layers. Filters export of entities based on their blank
status. This configuration option is available as the Include hidden entities in export
3D data exchange setting in the PTC Creo Parametric Options
dialog box.
yes
- Exports entities on blanked layers.
no
- Does not export entities on blanked layers. The entities on blanked layers are ignored.