Use the Download Certificate option to download server certificates independently from other actions. This method is much faster than if you were to download the full database with the Download To Device option under Manage Archive.
When you download certificates to a site device, SCT determines the correct set of certificates required by that device for successful site configuration. If any certificates are missing, SCT includes the set of certificates that it recognizes during the download, but the missing certificates need to be imported before trusted connections can be established. Also, no certificates are downloaded if the server certificate and private key for that device are not present in the SCT archive.