Mailing "statements" even when e-filing

Working through the 1099-B portion of my tax return, I come to a part which implies I must mail paper statements to the IRS even though I plan to e-file. I assume this is because cost basis was not originally reported to the IRS? (This is from a hedge fund I liquidated in 2018.)

It's not clear to me what a "statement" is. Does it mean the 1099-B I received from the hedge fund? Or do they actually mean a monthly statement (which I didn't save and are no longer available online because the account is closed)?

This is what the TT help says:

Mailing Instructions

Take a moment to double-check that your statements are complete. For each sale listed, there should be:

 - A Description
 - Date Acquired
 - Date Sold
 - Sales Price
 - Cost Basis
 - Gain or loss for each sale
 - A sale category based on how the sale was reported to you and the IRS

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 xxxxx-xxxx

If you are not e-filing, then mail your statements with your entire tax return to your local IRS office.