I've entered my Canadian medical expenses for 2016 but no credit because of low income. In 2017 I'll have higher income. Does TurboTax remember the amounts or do I have to re-enter for 2017 return? Also do I have to delete all the medical amounts I entered or does TurboTax automatically not submit to CRA if income too low? I realize I can only use those expenses that fit within a 12 month fiscal type year.