edit[field_url][0][url] not working

I have this code in my drupal 6 site;

javascript:u=document.location.href;t=document.title;s=window.getSelection();void(window.open(%22http://www.domain.org/node/add/nodetype?edit[title]=%22+escape(t)+'&edit[taxonomy][tags][15]=video'+'&edit[field_video][0][embed]='+escape(u)+'&edit[field_url][0][title]='+escape(t)+'&edit[body]='+escape(s)+'&edit[field_url][0][url]='+escape(u),'_blank','width=1024,height=500,status=yes,resizable=yes,scrollbars=yes'));

'&edit[field_video][0][embed]='+escape(u) returns as the href url, but the same doesn't work on;

'&edit[field_url][0][url]='+escape(u)

that field stays empty. This was working on previous versions. I also checked the field names and nothing seems changed. So I couldn't find out the reason to this problem.