Moved from Personal email to Work email without moving CC files from personal email. Can I recover?

So I moved a team member email using a personal email to a work email they recently got. I was not aware he was using the cloud to save most of his files. 

Now all files when he signs on adobe CC with his personal are all gone. It does not show up on his work email.  Tried to sign back in with his personal email to see if the cloud files are still there, and no files are present. 

Should I give back a license to his personal email to see if files will show up again under his email and under our business account? 

Or are they all gone? Thank you for any insight.