Sometimes, you may find yourself in this situation: your ad has amazing social proof (lots of likes, comments and shares) and you want to reuse it for another campaign while keeping the engagement it has created. However, both on Facebook and AdEspresso, you cannot create a new campaign using existing ads.
Your options are to either copy or edit the campaign.
Copy the campaign
The creative of your ads must be kept unchanged in order to retain your social proof. You can copy your campaign but you must follow those directions: Step 2 of Campaign Creation must remain unchanged (do not edit the creatives if you are promoting External Website, or the posts if you are promoting a Page Post), you can only change Facebook pixel but do not change any Google Analytics parameters of the old campaign, including the name of the reference campaign (double check this part since it's generated with the campaign’s title that may have changed). For general instructions on how to copy a campaign, see more info in this article.
Edit the campaign
Another option, probably the easiest of the two, is to edit your campaign. Here again, mind that in order to keep you social proof, you must not edit your ad creatives, while you can edit the target to refresh the audience of your ads.