Why is the import data source blank for an Employee?
After comparing Employees within Manager some have a import data source set and others are blank, why?
From the Miscellaneous tab:
The import data source will be blank if the Employee was created using Identity Manager. If the Employee was created via a synchronization with a target system such as Active Directory then it will show that as the import data source, as per the example above.
Please refer to the documentation for information on how to configure synchronization for the appropriate target system: