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I converted a fbx file to USDZ using Reality Converted. This seemed to work and I can double click in the USDZ file and a Xcode view pops up and shows the file/object with out a problem. But when I go to Reality Composer and try to import this USDZ I can see it added to the import list under + (add) and I can see it drag to the scene, but when I release everything disappears and I see nothing in the scene. How can I figure out what happen. Is there a console view I can bring up. Is there a way to list all the objects in the scene?