There is no Box A in Section D on my SCorp K-1 input screen, only on the Sch C input screen. The first line is Section D for the K-1 is the company name which I had to input. However, on the Sch C screen, the first line is Box A "Is this activity a qualified trade or business?"

I originally input my K-1s like I always do every year, because I thought the input values on line 17 would flow automatically to the QBI worksheet. When that didn't happen, I went back and scrolled all the way down and saw Section D. I had to enter all the values.