ParseXML reads and validates an XML file in preparation for import. If the XML data is valid, ParseXML returns an IImportParameters collection, which contains an IObjectImportParameters object for each object found in the document. You may then review the settings for the objects before passing this collection to ImportData, which performs the import. 

When ParseXML reads the file, it checks each object to see whether it already exists in adTempus and sets the State property of each IObjectImportParameters object.

By default the import action for each object is set to Import, except that CredentialProfiles with a State of Existing or Duplicate are set to Skip. 

When an object has a state of Duplicate, this indicates that an object with the same primary key but a different OID already exists. For example, if a NotificationIndividual is marked Duplicate, a NotificationIndividual already exists with the same name but a different OID. When duplicate objects are imported, adTempus updates the existing object with the data from the import source rather than importing the duplicate object. The existing object's OID does not change. 

To import only selected objects, set the Action to Skip for the objects you do not want to import. Note that an object that is marked as Skip will still be imported if it is referenced by an object that is being imported and if its State is New.