NullPointerException is thrown when complex data for complex oba hasn't been loaded

When a complex obs is loaded from the database and re-saved, a NullPointerException is throw in ObsService.saveObs() because the complex data hasn't been loaded yet. The if clause in ObsServiceImpl.saveObs(Order, String) that checks for a complex Obs needs to check if complexData isn't null before in turn checking if the actual data isn't too