You can archive your content by Campaign or by individual Ad.
To archive a Campaign:
Log into your account and go to the Campaigns & Bid By Domain section in the left menu.
Find the Campaign you want to Archive and click on the gray arrow to the left of to the Campaign Name. Then select Archive.
The process is the same when you want to archive an individual Ad. You can find the Ad in the Campaign that contains it.
Click on the gray arrow to the left of the Ad you want to archive and select Archive.
Once an ad is archived, you will be able to see it and view its statistics from the time it ran, but it will no longer run and you will not be able to re-activate it.
To see the archived ads, click the Archived dropdown and select Yes to see archived Ads or Campaigns.
To view Reports click on the gray arrow to the left of the Ad or Campaign Name and select View Report.