I tried to import my 1099-B from TD Ameritrade following their instructions (https://youtu.be/-Qwhsu5Vf28). It didn't work. What should I do?

It never prompted me for the document number, so I entered  the summary data from Page 1. TT says I have 2 sales; my Consolidated 1099-B is 54 pages.  I need to import the  1099-B.  Should I delete what I have first?