How do I transfer my 2017 taxes done on Turbo Tax Online onto the Turbo Tax Deluxe CD I purchased this year to use for 2018?

I am not doing my taxes online this year.  I purchased a Turbo Tax Deluxe CD and downloaded it onto my laptop.  To save a lot of time I am wondering why I can't find my 2017 taxes since they were done on Turbo Tax too.