@ErnieS0 Thank you so much for your detailed answer!
Joint part-year California return. Claim a credit for tax paid to IL and MD on the separate returns. These will have to be entered manually since they are coming from mock returns. You would only get credit for IL tax paid for the part-year CA residency period, so you will have to do a proration.
Full year separate Illinois tax return for you. Claim a credit for your portion of CA tax.
If we do not want to claim the tax credit for CA joint tax return and IL separate tax return, can we just waive doing this? Since the amount is very small and we do not want to modify the file mannually
