Note that the tax data files will only be useful if you also install Turbotax for those years on the new computer, and even if you have the CDs or the downloaded installer files, turbotax versions older than 2020 may no longer be supported. (i.e. they won't install or they will install but won't update)
To prepare your 2023 return, you only need the tax data file for 2022. And you should keep the PDFs of all your prior tax returns.
Also, before you move computers, I would go ahead and open all your old returns and create/save a PDF for "all forms and worksheets". This will include the internal program worksheets that may contain useful data but aren't part of a tax return. That way you have the worksheets in case the old programs won't install on the new computer.
