on the 1099-B there were various categories of trades
types A & D where sales amount and cost were reported to the IRS. there may be wash sales involved
types B & E where sales amount but not cost were reported to the IRS
Types C & F proceeds and costs not reported to IRS
the detail of all trades reported on form 8949 must be submitted to the IRS either by completing the form for each trade or sending the 1099-B to the IRS using form 8453
details of trades types A & D properly reported directly on schedule D lines 1a or 8a do not have to be submitted to the IRS.
