Form 8949

[richard's_tax]

If you have short and long term gains/losses with the short reported and the long term both reported and not reported, it looks like the program generates schedule D and only Part II, page 2 of form 8949.  If you chose to aggregate, the long term with basis reported shows up on schedule D and the long term transactions with no basis are on schedule D and on page 2, Part II of 8949.  If using e-file will supporting documents need to be sent to IRS?  If yes, can it be avoided by disaggregating and reporting each transaction on 8949?

[Bsch4477]

If you aggregate covered (basis reported) transactions and list the others separately you can e-file and not have to attach other documents.