If you go to "wages and income"
Then Import Summary
Then View
You should see a line for "E*Trade from Morgan Stanley"
If you click on the + sign next to that line you can see the details of the import. which will include 1099B as well as interest and dividends.
If you click the delete button then it will delete the entire Etrade import and you can do another import from Etrade.
At least this is how it works for my desktop Premier version.
I did somehow end up with a duplicate of my 1099B, which I was able to delete. Not sure how that happened but it was easy to fix.
