I moved from Colorado to Michigan in 2021. I contacted the pension fund management company and changed my address in November 2021 to Michigan, to be effective 1-1-2022. They screwed it up and withheld Fed & State tax for Colorado for 3 months until I caught their error. I called them to get a re-issued W-2 and they told me it couldn't be done even though it was their mistake. I don't know how/what I'm supposed to file to get a refund for the Colorado state tax withheld.
