Here you can select which workflows included in the import package will be imported. The following extra option can be configured:
•Import all workflow scopes - if checked, all workflow scopes will be imported, even if the respective workflows are not selected. This check-box is only displayed when the import package contains an exported website, not separate objects only. 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.