7.7.2 Undoing/Redoing Refactoring Changes
You can undo (or redo) any changes that you made using the commands in the
Refactor menu by using the buttons on the
Undo/Redo toolbar menu.
 | Undo - The IDE rolls back all the changes in all the files that were affected by the refactoring. |
 | Redo - The IDE repeats the refactoring changes in all the files that were affected. |
If any of the affected files have been modified since the refactoring took place, the refactoring Undo/Redo is not available.