When you have that many transactions and some (or all) of them need review, I recommend that you delete your imported 1099-B and then type it in yourself. You don't have to type in each transaction. You can enter totals for each Form 8949 catagory. To do so in TurboTax, while working in your return:
After entering all your sales section totals, Look for "Now we'll help you upload your 1099-B since the IRS requires a copy" and follow the instructions, or you can mail a paper copy of your 1099-B to the IRS. If you want to mail, click on "How do I mail my statement".
Take a moment to double-check that your statements are complete. For each sale listed, there should be:
In some uncommon cases, there will be an adjustment code and adjustment amount.
NOTE: Any sales summaries that include only Box A or Box D sales, and which have no adjustments to gain/loss, do not need to be included on a statement mailed to the IRS.
Here's how to mail your statements:
If you are e-filing your tax return, then mail your statements along with Form 8453 to:
Internal Revenue Service
Attn: Shipping and Receiving, 0254
Receipt and Control Branch
Austin, TX 73344-0254