Here's how you can restore archived creatives back to the Creatives tab.
To retrieve a creative
On the Creatives tab, select Archived Creatives from the All Creatives list.
Archived Creative
Click Archived Creatives to go to archived creatives.
Click on
To retrieve the required creative
Unarchive
A message appears to confirm if your action.
Type UNARCHIVE in the box.
Unarchive Creative
Click on Unarchive, the creative is restored. You can work on the creative and republish it again.