Use of Migration Method: Import Set (Scripted)

Scope: Target ServiceNow Server types only.

The Import Set (Scripted) method should be used if you want to set the Created By, Created On, Updated By, Updated On or Mod Count fields on the target record and have defined field mappings for any of these.  It should also be used if you want to update a field with NULL, i.e. clear its current value by using a field mapping with the NULL keyword

Using this method with the Migrate SysIds option (available when source server type is also ServiceNow), ensures that the Sys ID of the source record is used on the inserted target record thereby maintaining relationships based on reference fields.  If a target record is found with a matching Sys ID, this target record is always UPDATED regardless of the Key Mapping settings.