Non resident Oregon tax

Hi,

I live in Washington State and work from home. My paystub goes to our main office in Oregon. I receive all my Oregon tax back every year when I filed Non-resident taxes. 

I had a mistake on my 2019 tax return and I needed to do amendment Oregon taxes in 2020 - I receive two tax return checks from Oregon last year - one for 2020 and for 2019. 

This year when I am filing my taxes, Turbo tax considers my 2019 tax return from Oregon taxable for Federal return. It doers it correctly for 2020!

How can I fix this?

Thanks

Thanks