I'm having the same issue. I have been using TurboTax Premier since 2014 and only started having trouble with my K-1 Forms when filing my taxes for 2018 & 2019.
I click on Federal Taxes / Wages & Income / Schedules K-1
I see S Corporation (Form 1120S) listed in the section of K-1 Forms, but when I start I am only able to enter very minimal data. The first page is a breeze, but I have 9 additional pages of data that I need to be entered and I do not see these additional pages on Turbo Tax.
