Hello Luca
User preferences cannot be saved in Discovery and SpaceClaim user preferences cannot be used for Discovery but they can be used in the SpaceClaim new version.
Custom materials created in older versions of SpaceClaim should be saved in below location.
C:UsersAppDataRoamingSpaceClaimMaterials
File name : Custom (xml file)
This should be accessible to the newer versions.
You are navigating away from the AIS Discovery experience