After you file

 While I was filing my 2019 taxes  a 1099 R it says I have to amend my 2018 return because I recharacterized an ira in 2019 for a 2018 contribution (even though it was just a couple of days I had it). Been trying to amend my 2018 return but my computer constantly updates all my turbo tax  documents .tax to the 2019 version so I cannot amend the 2018 return. I tried for hours but the 2018.app keeps getting turned into the 2019 version any tips. I file with cd version