Amend 2017 state return resulting in larger state refund

[mikeu]

I'm amending my MO 2017 state return that will result in a larger state refund, the reason for the amended return is that I failed to make state adjustments.  This will not change my federal return.  I itemized my 2017 federal return resulting in the state return being taxable on my 2018 federal return.  How to I claim the additional state refund on my 2019 taxes, since I itemized in 2017 the refund will probably be taxable?  I'm not itemizing for 2018 and probably won't for 2019

[PaulaM]

You will add the additional refund to your 2019 taxes when you file in 2020.