How do I use the new F10 E-Form to submit updated information when I previously submitted my initial notification using the old form version or the scan version of the form?

Use the F10 E-Form and select the Initial notification radio button. When you are typing in the Description of Project field on the second page of the form just state that you have already submitted an initial notification by the old method and you are updating using the E-Form.

HSE will then be able to cross-reference with the original notification.