Interface > Working with Data Exchange Formats > CATIA > Importing and Exporting to CATIA V4 > About Importing a CATIA V4 Model with Layers and Layer Filters
  
About Importing a CATIA V4 Model with Layers and Layer Filters
You can import a CATIA V4 model along with its layers and layer filters and use the display status of the imported CATIA layers and the layer filters to selectively import geometry from the CATIA layers.
The layer filters of the imported CATIA V4 model are converted to master layers in the Creo application. All layers assigned to a layer filter in CATIA are assigned to the corresponding master layer. The association of the master layers with their assigned layers in the Creo application is the same as the corresponding association of the layer filters with their assigned layers in CATIA. The master layers and their layers in the Creo application retain the original names of the layer filters and their layers in CATIA.
 
* If Associative Topology Bus is active, you cannot filter layers when you import CATIA V4 models. You must clear the default selection of the Enable ATB option in the Import New Model or the File dialog box to set the layer import status.