At this moment this is 'by design', in the sense that Rapid Start / Configuration Packages is a very general tool, and mainly intended for importing and exporting smaller number of records. If they want to migrate large numbers of records. A workaround is to create an XML-port (that either reads XML or comma-separated files). We would like to be able to import and apply larger amount of records into the item table, and this process to be faster. Now this takes several hours to import from Excel. And than even more hours to apply the records into the item table.