If for any reason, you deleted a portion of your audio while editing it and you decide to undo what you have deleted, you can do that using the Undo button. To use the Undo button to restore deleted audio on the editing page, do the below:
Simply locate and click on the Undo button that appears within the portion of the audio you deleted. This icon is a crossed letter “S” in an enclosed bracket. This action will bring back the deleted audio.