Bug 42690 Loading .importorder file fails when package prefix entry starts with an uppercase letter [code manipulation]
After saving my manually configured import order definition in the organize imports preferences page, I can't load it again ( Error Box: Not a valid import order file). The reason seems to be the existence of package prefix entrys which start with an uppercase letter.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/ImportOrganizePreferencePage.java
} else {
					return null;
				}
			} else {
				return res;
			}
		}
		return res;
	}
	
	private List loadImportOrder() {
		FileDialog dialog= new FileDialog(getShell(), SWT.OPEN);
		dialog.setText(PreferencesMessages.getString("ImportOrganizePreferencePage.loadDialog.title")); )
		dialog.setFilterExtensions(new String[] {"*.importorder", "*.*"}); 
		String lastPath= getPreferenceStore().getString(PREF_LASTLOADPATH);
		if (lastPath != null) {
			dialog.setFilterPath(lastPath);
		}
		String fileName= dialog.open();
		if (fileName != null) {
			getPreferenceStore().putValue(PREF_LASTLOADPATH, dialog.getFilterPath());
					
			Properties properties= new Properties();
			FileInputStream fis= null;
			try {
				fis= new FileInputStream(fileName);
				properties.load(fis);
				List res= loadFromProperties(properties);
				if (res != null) {
					return res;