Here you can select which automation processes included in the import package will be imported. The following extra option can be configured:
•Import all site specific triggers - if checked, all site specific triggers will be imported, even if the respective processes are not selected. This check-box is only displayed when the import package contains an exported website, not only separate objects. If you are importing to an existing site, this option is deselected by default.
Detailed information about the built-in export/import functionality in Kentico CMS can be found in Developer's Guide -> Managing sites -> Export and import.