You may add recognition ads to pages and then want to move them to a different page. This is how you can remove an ad which has been placed on a page.
1. Go to the page spread where the ad is placed. Select Community Content.
2. Select Recognition Ads.
3. Click on the ad and drag it to the right to drop in the Ads View. Now the ad will not show as Used and can be added to a different page.
Note: Do not delete the page spread to remove an ad. When you delete the page spread, all of the ads will move to Unused and you will have to place them all on pages again.