Export and Import a Website, List, or Library
In addition to farm and site collection backups, SharePoint allows you to back up and restore a website hierarchy or even a single list or library. Unlike a site collection backup, these are not full fidelity since some details—including workflow settings, file checked-out status, alert subscriptions, and personal web part settings—are not captured in the backup.
If you export a website, that website and its subsites are included in the backup. If you export just a list or library, only the list or library is backed up. When performing an import, the content can be either merged with existing content or created.
Exporting content is a resource-intensive operation, much more so than a site collection ...