When trying to synchronize work items the following error is shown in the log and the work item is not copied:
ERROR : RallyEIF::WRK::Connector.rescue in copy_to_rally - ALM defect ID 12345 not copied to Rally (undefined method `entity_type' for 12345:Fixnum)
Additionally, the configuration will reference either a <QCUrlAttachmentFieldHandler> or a <QCAttachmentFieldHandler>.