Archived backup files is a backup files that have lost their backup instance. This is due to the deletion of backup instance or deletion of Web Application or Database. This archived backup files can be downloaded and restored like a normal backup file.
Restore backup files
When you click restore backup, you need to choose which Web Application/Database this backup files will be deployed. You can deploy your backup to any Web Application/Database in any server that you own.
If the backup file is a Web Application backup, restoring backup files will overwrite your files inside the Web Application if it already exists.
if the backup file is a Database backup, please make sure the selected database is empty before restoring your backup. If it isn’t, please be sure that you know what you are doing.