Retirement tax questions

One interesting thing that I noticed was that if you switch to Forms view within TT and go to the Form1099-B Wks and scroll down and look at the top of page 2 you will see a notation at the top that includes the following last two sentences:

"Note that individual sales are rounded off to the nearest dollar. As result, the various summarized values below may differ slightly from statement totals." 

 

That certainly indicates that the TT folks specifically intended to round off the individual sales. My concern here is that they are rounding the individual cost basis and proceeds numbers prior to the net calculation. I'm not sure that is correct but it would surprise me if the decision to do it that way was not thoroughly vetted. Based on the wording at the top of page two of the Form1099-B Wks I would say it was intentional rather than a mistake.