Why doesnt my mortgage interest show as $0 in itemized deductions when I do a comparision of itemize or standard deduction? I did enter a value earlier.

I have entered Interest, taxes, state taxes and other deductions.  Donations, Real estate taxes and state carried over.  Mortgage interest enterd as 0. If it was added, my total would be higher than the standard deduction.  I do see the reversal of any State and real estate over 10K as a negateive already