Amazingly, when I called turbotax support, the representative told me the problem was it didn't import 2017 info correctly, that it was in fact showing me 2016 data, and that I needed to enter 2017 info for it to start asking me for 2018 info. However when tried entering "2017" info on the phone with her, it of course did not then start asking for 2018 data. I was also able to confirm from last year's return that what turbotax was calling "2016" data was really from my 2017 return. So of course it's just a typo. But the official advice I got directly from the turbotax help line was shocking.
