For each field you need to add described text to the custom variables, somehting like that:
art_id=$cck->getValue('art_id')&cphone_no=$cck->getValue('phone_no')&email=$cck->getValue(email')
Then read this values in second form as "url variable" live value. If ou don0t understand this you need to read our Manuals section to understand the basic concepts of Seblod.