Backward Compatibility for Desktop Software

[MAC18]

I do my taxes each year using the CD/Desktop version of TurboTax.  Will the current 2022 cd/desktop product open all of my prior year turbo tax files?  Or, for example, do I need to keep the 2018 cd/desktop software to open my 2018 turbotax file?  I am referring to the turbotax files, not the pdf files.

[Taxlax]

I believe you will need TurboTax CD for each year to open that particular year Tax files. You cannot use 2022 TurboTax CD to open 2021 TurboTax files.