If you want to avoid creating them again, you can edit the services and point to a folder on another disk, or an empty folder.
Under Storage > Shared Folders I see my shares on the old HDD that I would like to point to folders on my new HDD. I expect that it's the UUID that needs to be changed, but the Edit tool doesn't seem to allow that. Is there another way that I am not seeing? My wife correctly says that I suffer from Male Pattern Blindness.