If a form is configured to dynamically add form fields to the form, this option controls how dynamically created keyword mapped fields affect the primary item.
When this option is selected, values entered in keyword fields that were dynamically added to the form update the corresponding keyword on the primary item.
When this option is not selected, values entered in keyword fields that were dynamically added to the form are not updated on the primary item.
This option is disabled when <Auto-Generate> is selected in the From drop-down list.