Layers not recognized by Sketch from DWG?

Hello Catia User Community,

I hope you can help me out with this. I have a simple DWG, made with Autocad (I believe not older than 2025 version). I need to import said DWG and create a sketch for every layer the DWG has. There is a specific funcion for that, called "Sketch from DWG", in Building 3D Design:

 

 

The dwg has two layers for test reasons: "bagno" and "fancoil".

 


But when I import it using the function, it says it only has...one. Why?

 

What should I do to fix this? 

 

TIA