Should I restore prior years software (drive crashed) prior to installing TT 2018 in order for my 2017 info to import into 2018? My TT folder shows "TaxFile2017" type

I have the CD's, however I'm not comfortable re-installing without some advise, as I don't want to alter my returns from previous years.  A similar situation occurred to me a few years ago and my previous year return did not import into the current year installation.  I don't recall exact circumstances, so there may have been different circumstances back then.  From what I can see, my TurboTax File shows all my returns with the "type" of file indicating "TaxFile20XX".  I much appreciate any help/advise you can provide.