Answer
In CATIA, from the connector toolbar, clicking on the Query icon, you will be able to access the PDM Query dialog and to search for any CAD document previously uploaded to the PLM platform. Once the searched CAD Document has been found and selected, a double-click will open it in CATIA.
Note that the double-click corresponds to an Open as Saved.
See the 'Opening' subgroup for related information
See more: Open CAD Document in CATIA