creo4 config.pro option documentation for: COLOR_PROP_REMOVE_DUPLICATES 
(hidden)
intf2d_in_ced_3d_wire_parts
yes
, no
*
Determines whether to include wire parts when you import Creo Elements/Direct
drawings that are associative with 3D models.
yes
- Includes wire parts in the associative drawings imported from Creo Elements/Direct
.
no
- Does not include wire parts by default in the associative drawings imported from Creo Elements/Direct
.