Deductions & credits

OK ...  then it could be a glitch which means just waiting for an update ... don't be in a rush to file especially before the IRS starts accepting returns.   The Sch A is not expected to be fully functional until 1/14 so try again next year.      Switch to the FORMS mode if you wish and make the entry manually  but any overrides will void the accuracy guarantee and could keep you from efiling ... so make sure to undo it before you efile.