Accessing worksheets from past years - have .tax files

[alincicum]

I recently sold an investment property and my accountant needs to refer to the Schedule E worksheets for filings from 2016, 2018 and 2020.  I printed the .pdf files at the time of filing, and pulled 2018 on from TurboTax online, but it does not include the worksheets.  I have used TurboTax online exclusively since 2012.

I have the .tax files for each of these years, but can't open them, which is crazy for having paid for the software.  For 2021 I was able to download the software from the Intuit website and successfully open that .tax2021 file, but it isn't available for earlier years.  Help!

Thanks!