I just ran across the very same issue, AZ resident and taxpayer. In my case, there was no red exclamation point in forms mode, opened up the form, put in dummy information, zeros in the dollar amounts, checked both 20 and 21 tax years in the step by step, pressed on. The form was already blank with no information entered into the worksheet when I first opened it up. There was no other workaround that I could find. When I go back and remove all the entries and uncheck the boxes (like the way it was when I first opened this form) I get the red exclamation point when in forms mode.
