Copy room preserving complex tariff

// The save2copy task needs to be handled slightly differently.
		if ($task == 'save2copy')
		{
			// Check-in the original row.
			if ($checkin && $model->checkin($data[$key]) === false)
			{
				// Check-in failed. Go back to the item and display a notice.
				$this->setError(JText::sprintf('JLIB_APPLICATION_ERROR_CHECKIN_FAILED', $model->getError()));
				$this->setMessage($this->getError(), 'error');

				$this->setRedirect(
					JRoute::_(
						'index.php?option=' . $this->option . '&view=' . $this->view_item
						. $this->getRedirectToItemAppend($recordId, $urlVar), false
					)
				);

				return false;
			}

			// Reset the ID and then treat the request as for Apply.
			$data[$key] = 0;
			$task = 'apply';
		}