Changing a Licensed User to an Unlicensed User

Beth I
✭✭✭
I have licensed users who should only be unlicensed with editor can share user level.
I cannot seem to figure out how to change this user without losing or transferring his smartsheet items to another person. Is there a way to do this?
They only have editor can share access to the sheets and reports.
Any ideas?
Thank you in advance for your advice.
Beth