"Import by Incrementally adding data" is grayed when importing Extended User Information - Personal Information
Employee Profile > Import Extended User Information
Reproducing the Issue
Go To Admin Tools > Type in the Tool Search : Import Extended User Information
Select Personal Information radio button, and the "Importy by incrementally adding data is grayed out".
Select Trend Information and "Import by incrementally adding data" will be enabled
Select Background Information and "Import by incrementally adding data" will be enabled
Personal Information contains employee records which does not increment within a portlet.
Basically, Personal information such as sss, date of birth, citizenship etc. only has one data, while the Trend Information and Background Information contains elements, fields or data that could increment or be appended to an existing record within the portlet.
This is the reason why the "Import by incrementally adding data" is available only and can be selected for Trend and Background information.
KBA , LOD-SF-EP , Employee Profile , Problem