For reference, I just tested that I was able to use Duplicator to restore a backup that I created with Duplicator. My process was:
- Create a new site in Local
- Copy the installer.php & archive to the Local site’s /public/ folder
- Rename the wp-config.php file (Local should have created this and you can use the credentials from it for the Duplicator form). In my case, and probably all Local sites:
- With the wp-config.php file renamed you shouldn’t have any issues running http://yoursitedoomain.local/installer.php with the default Local site credentials
