Documents GONE after update
I am working on a MacBook Pro for a family friend. He recently completed the High Sierra update with the option to use iCloud storage for Documents and Desktop. After completing the update and associated actions the documents and desktop folders are now empty. There is nothing located in iCloud and there are no DOCUMENTS left on the hard drive. There remains on the hard drive "downloads" and "photos" that existed before the update but all personal documents appear to be gone.
Are they stored somewhere in a database that I can choose to recover them? What are my options (and FWIW there is no timecapsule, that will be remedied shortly).
Why did this happen? I'm concerned by this.
Thanks.
MacBook Pro, macOS High Sierra (10.13)