1099-B Worksheet import

When I imported data from my financial institution most all of the data was received correctly.  The problem that I found was the 1099-B data was not ready yet and was not imported.  A week later I checked with the institution and found that the 1099-b was ready to download.  I then again imported from that institution.  Now I have two 1099-b worksheets, one with the correct information and one that is blank.  All of the other imported data looks correct.  How can I fix this?