Wait.  those lines need codes BEFORE entering other QBI data?

I input those values (codes V, W, and X on line 17 of my SCorp K-1) and then completed Section D at the bottom, linked it to the QBI worksheet, and nothing there when I click on the QBI worksheet.

If you put those in before you fill out Section D then Section D does a lot of automatic pulls for you. I always recommend starting with the K-1 Lines 1-20 before doing any additional entry.

When you input the codes on V, W and X then scroll down to Section D, did box A auto-check Yes for you? (Black X) or is it a blue X?

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.

You may be missing some updates which would explain why its not calculating the way you are expecting. With the updates from last week Section D on the Sch K-1 Worksheet (From S-Corporation) is line A "Does this K-1 include a Section 199A Business?"  Try running your updates. If it says No Updates Found you may want to try the steps here or contact technical support. https://accountants-community.intuit.com/articles/1608911-no-updates-found-proseries-versions-not-up...

@mark28321 which version of ProSeries are you using?

Version 100024. I just updated it and now the forms flow to the QBI Summary, but the Total QBI Deduction does not calculate correctly. I guess I can override it.

I am using HR block.  What is this section D everyone is referring to?  I can't find it after I manually enter my line 17  V

I suggest you ask in one the the HR Block forums.....this forum is (supposedly) for ONLY tax professionals.  
And the section D is specific to the software used (i.e. ProSeries)