You can use Undo/Redo to return to the previous state.
Procedure
To restore your work to the state it was in before your
last action, for example, copying, deleting, or moving some element,
use the Undo option or press Ctrl+z.
To restore your work to the state it was in before an Undo,
click the Redo button or press Ctrl+y.
Note: This is a
multi-level operation. Users could use Undo/Redo multiple times until
the file returns to the original state without any edition.