After you file

Thank you. 

That's where I run into the problem.

I duplicated the file and selected the PERSONAL tab ——> OTHER TAX SITUATIONS ——> AMEND A RETURN (START). 

On the next screen,  I scroll down to the "I need to change (amend) my return for a different reason" section.

I select edit for DEDUCTIONS & CREDITS. When I scroll down to Medical, I can see the gross error listed next to the amount I paid last year under MEDICAL EXPENSES. However, when I click UPDATE, I doesn't appear on any subsequent screen.