How to change Ship to party no. in delivery doc. after creating Invoice

Hi,

Sold to party ( customer code ) 1001473

But by mistake bill was raised ship to party ( customer code ) 1001082 then I changed the ship to party code ( through VA02 )and saved the documents, but still in the invoice it is showing ship to party address only instead of sold to party. If any thing possible in the delivery level ( vl02n ) to change the ship to party so that it will possible to change the invoice it self. Kindly confirm so that I will reverse the entry and change the ship to party code in vl02n and I hope it will not any reflect in the invoice.

Regards

Jibanjyoti