Your data files should be saved in Documents then in a Turbo Tax subfolder. You should have saved both the files ending in .taxyyyy and the PDF files. You don't need to have the program installed to open a PDF file. You will need to reinstall the program to open or amend the .tax file.
So before you uninstall the old programs, open them and save each year as a PDF file. Save it 2 ways. One PDF of the tax return as filed and save a PDF with all the worksheets.
Removing the programs should not remove the data files.
