creo4 config.pro option documentation for: ECAD_COMP_LAYER_MAP 
ecad_comp_layer_map
Category: Data Exchange
Description: Allow layer mapping for ECAD component's import into Assembly.
Values: yes, no
Default Values: yes
class="codeph">2000
, 2004
, 2007
, 2010
, 2013
, 2018
*
Enables you to select the DXF file version to which you want to export a drawing. This configuration option is available as the DXF export format version
2D data exchange setting in the Creo Parametric Options
dialog box.