Hi there!
Better Search Replace Support Team here, Thanks for reaching out with your query we would be happy to assist.
I’m afraid it’s not possible to undo changes once the search and replace has been done. The plugin also does not create any logs of what was changed during the search and replace.
The pro version has a saved profile feature but it will only work if you first enabled the save profile feature prior to performing the search and replace. If checked, the settings on that search and replace will be saved for future use. But if left unchecked then I’m afraid BSR will not save any of those.
The best option here would be to restore from a previous backup. If you haven’t created one before running the search and replace, we recommend reaching out to your hosting provider for assistance as they may have a backup system in place.
Please note that if you’d like to manually undo the changes by doing a search and replace in reverse, that might affect other data on your database so we would highly recommend reverting from a previous backup if possible. Otherwise, you can give it a try but please make sure to create a database backup first to avoid any further issues.