@chesterspal
In order to transfer in the 2024 data that 2025 might need, you need the .tax2024 datafile on the new computer.
BUT...that may not let you examine specific 2024 items.
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Your first step would be to make sure you've generated PDF files on the old computer for each year. Usually two for each year. One PDF as the: a) Filing Only copy, and another PDF b) with ALL the backup worksheets and forms. Transferring those to the new computer will allow to examine each year's forms in as much detail as you decide might be necessary in the future. But make sure you transfer the .tax2024 datafile too.
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Still, it could be advantageous for you to install the actual working 2024 and 2023 software for each year. I commonly go back to prior years to see either what I did....or how the software behaved for those prior years. For any tax year you do re-install, you'd need the .taxyyyy datafile for that year to actually open that year's prepared-and-filed tax return (other than just looking at the PDF.
Only 2022, 2023, and 2024 desktop sets can be installed for the prior years. and 2022 will drop away later this year.
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*
