Interface > Working with Data Exchange Formats > CATIA > Importing and Exporting to CATIA V4 > Importing CATIA V4 Models with Dittos in Part Mode
  
Importing CATIA V4 Models with Dittos in Part Mode
You can import CATIA V4 models with dittos in Part and Assembly modes.
When you import a CATIA V4 model in the Part mode, the resulting part file contains the merged geometry of all its workspaces.