How to import a part file in PART DESIGN

Hi, @SA

I have created part files in xDesign, which are supposed to be saved in a collaborative space. When I try to import those files in Part Design ​​​​​​​app, I cannot get access to the file for some reason. Do you know how to import items in PART DESIGN?

I would be grateful if you could help me.

Edu ​​​​​​​3DEXPERIENCE ​​​​​​​CATIA ​​​​​​​