I am moving from Turbotax to ProSeries this year.  I dont have proseries 2019, nor turbotax 2020.  How do I convert my 2019 turbotax files to 2020 proseries files without those programs?  Do I really have to buy turbotax 2020 to do this?  Seems like a waste of money to buy Proseries, then have to buy Turbotax again.

Every article that has this as a post has... "convert your 2019 turbotax file to a 2020 turbotax file".  That is a big missing how to.