Once saved, log entries cannot be tampered with. They can be canceled, but they remain in the log with Canceled information.
In the Notes Log pane of any Edit window, click the hyperlinked date stamp of the note you want to cancel.
In the View Notes Log panel, click Cancel Note. Then click Yes in the popup window that appears.
To see a Notes Log’s canceled notes, click the Notes Log pane’s > Show Cancelled Notes. Canceled notes are displayed with a line through the note and include the date and time the note was canceled and who canceled it.