Bug 23366 Modify parameters refactoring remebers last state [refactoring]
2.x - select a method with 2 arguments - activate modify parameters - change order and one name - click next to see preview - press cancel - activate refactoring again observe: the dialog shows the last entered settings.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/actions/ModifyParametersAction.java
return SelectionConverter.codeResolveHandled(fEditor, getShell(),  RefactoringMessages.getString("OpenRefactoringWizardAction.refactoring"));  
	}
	private RefactoringWizard createWizard(){
		String title= RefactoringMessages.getString("RefactoringGroup.modify_method_parameters"); 
		String helpId= IJavaHelpContextIds.MODIFY_PARAMETERS_ERROR_WIZARD_PAGE;
		return new ModifyParametersWizard(fRefactoring, title, helpId);
	}
	
	private void startRefactoring() {
		Assert.isNotNull(fRefactoring);
		
		if (!ActionUtil.isProcessable(getShell(), fRefactoring.getMethod()))
			return;
		try{
			Object newElementToProcess= new RefactoringStarter().activate(fRefactoring, createWizard(), RefactoringMessages.getString("OpenRefactoringWizardAction.refactoring"), true); 
			if (newElementToProcess == null)
				return;
			IStructuredSelection mockSelection= new StructuredSelection(newElementToProcess);
			selectionChanged(mockSelection);
			if (isEnabled())
				run(mockSelection);
			else
				MessageDialog.openInformation(JavaPlugin.getActiveWorkbenchShell(), ActionMessages.getString("ModifyParameterAction.problem.title"), ActionMessages.getString("ModifyParameterAction.problem.message"));	 
		} catch (JavaModelException e){
			ExceptionHandler.handle(e, RefactoringMessages.getString("OpenRefactoringWizardAction.refactoring"), RefactoringMessages.getString("OpenRefactoringWizardAction.exception")); 
		}
	}
	
}