Copy a creative to another line item
You can copy creatives to make new versions:
In your DoubleClick for Publishers account, click the Orders tab.
Click the checkboxes next to the creatives you want to copy.
Click Copy to copy the creatives under the same advertiser, or click Copy to to select a different advertiser.
The new creatives have the same assets and settings as the originals, with the same names and "(copy)" appended to the end.