you're contradicting yourself. If you manually entered items, they will appear on Form 8949 itemized, not summarized.
If you are itemizing there is no reason to attach the statement.
If you are summarizing and your transactions are short term trades (category A) then the grand totals go on Schedule D, not 8949, and again there is no need to attach a statement. Reason: the basis has been reported to IRS by the brokerage.
