Yahoo tries to stop users exporting contacts that originally came from FB

Yahoo tags all contacts imported from FB as "Facebook Contacts" which prevents them from being exported. It used to be that adding them to a list removed the tag, as described here:

http://help.yahoo.com/l/us/yahoo/newcontacts/impexp/ctfbexport.html

That no longer works. The only way to remove the tag at the moment is editing the contacts individually.