"Does the IRS basically say you need to file all the same data as is filed from example: “Schwab” on their 1099-B i.e. every transaction and the Totals ?"
Basically , No.
The requirement is relaxed by the :
Detail Reporting Exception: if you summarize Category A or Category D, Form 8949 is not needed for transactions without adjustments. No mailing is necessary. No attachment is necessary.
There is no exception for the other Box Categories.
