State tax filing

One issue and one problem/bug:  Since the Federal 1040 was created by Turbo Tax, Turbo Tax should know if the AGI included any income from a 529 distribution?  TurboTax should not have to then ask in the State 1040 to add any withdrawal that was included in the Federal 1040.

I had incorrectly entered the MI 529 withdrawal amount that creates an entry on Schedule 1 Line 21.  This then deducts the 529 withdrawal as income but the income was never reported in the AGI.  However, TurboTax does not allow me to correct this entry to $0.00?