It's a little more complicated than just moving the links. You need to make sure they are valid, and the indexes need to be updated, etc.
You could play with the Admin or edit.cgi such that the only links selected from the Validate table are the ones from that user, and you automatically set the "validate" button to "checked". Then you just hit the "submit" button to move them. It will pick up any errors this way, to make sure things work.
You can then put back the original copy of the editor.cgi to get to the other links.
If I were going to do it any way, that would be it.
http://www.postcards.com FAQ:
http://www.postcards.com/FAQ/LinkSQL/