creo4 config.pro option documentation for: DM_ENABLE_SIMPLE_IMPORT_EXPORT 
dm_enable_simple_import_export
Category: Without category
Description: Enable a simplified method of import/export between disk and Workspace.
Values: yes, no
Default Values: yes
iv id="ww3_3_6_6_3_28_3" class="Body">Detemines whether IGES entities are clipped with respect to IGES views.
yes
- Clips entities outside the view outline.
no
- Does not clip entities.