I just started up TT2018. I'm to download last years tax form..I have 3 files..all same info but two have either ~ or ~~ in front. Which file should I use for 2018 ?

I have 3 2017 TT files to use for 2018...the normal saved file or two others but they have either 1 or 2 of this symbol in front (~).  Which should I use for 2018 at start of turbotax 2018