Unfortunately, that doesn't work either. I tried it and the issue is being introduced in the step after adding the 1098 when I enter the date the house was originally bought. Once I add my purchase date which was before 2017 it then recalculates the deduction and my estimated refund drops by a few thousand $ instead of increasing (allowable base should move from 750K to 1M so it should increase).
Is there a way to see the actual worksheet that is being used to calculate the allowable deduction? Just seeing what is visible to me I wonder if instead of adjusting the base to 1M there is a bug that adjusts it to 0.
