If you just want to edit the location targeting in your existing campaign, you're in the clear — your social proof (likes, comments, shares) will stay intact as long as you don’t touch the actual ad creative.
Here’s the deal:
Safe changes (won’t affect social proof):
Changing location, age, or interest targeting inside the ad set
Tweaking budget or schedule
Adjusting optimization or delivery settings
Changes that wipe social proof:
Editing the ad creative (text, image, video, headline, URL)
Duplicating the ad without keeping the original post ID
Switching the campaign objective
Creating a brand new ad instead of using the existing one
If you just update the location targeting in the ad set, your ad will keep all its social proof — no worries at all!