Remember, you can always prevent the re-importation of the ATB trial balance by having the ATB client trial balance open....the weakness of using the same ATB, or ATBWU file on both 2021 and 2022 is that if you have to go open up the 2021 proseries file, it will then import , but it will be the 2022 data...but, you can prevent that by having the ATB or ATBWU trial balance for that client OPEN...that will prevent the importation.