Lost themes

Dear SDN,

I have modified several themes in the theme editor and saved them as my own. I noticed they were stored in a default folder. Next I foolishly mived them to another folder, now they dony appear in the theme editor anymore. I moved them back to the default folder, but they still do not appear in the theme editor

How can I get them to appear in the theme editor so I can work on them again?

Thanks

Jeremy Baker