Documents that have Multi-Instance Keyword Type Groups configured will behave slightly differently depending on how the Fill HTML fields with document keyword and property values option is configured.
When the Fill HTML fields with document keyword and property values option is not selected, the form fields are not populated. When values are entered into fields, a new instance of the Multi-Instance Keyword Type Group is created containing the values entered in the form. For example, if the primary document contains two instances of a Multi-Instance Keyword Type Group, and new values are entered into the form fields, a third instance of the Multi-Instance Keyword Type Group is created for the primary document.
When the Fill HTML fields with document keyword and property values option is selected, the fields on the form will be populated and the corresponding instances of the Multi-Instance Keyword Type Group on the document will be updated.