After you file

yes not futures but some brokers designate certain option spreads as Section 1256 contracts - but the statement should show that clearly; so if they're just included as sales under regular 1099B sections, what's the issue, are they just missing cost basis?  Generally you would input each leg as tho they are separate and will get to the net gain/loss on Schedule D.

 

The short leg may have zero for the cost basis and falling under the "cost basis not reported to the IRS" i.e. non-covered category.  You may want to input these as "one by one" with the details rather than as a sales summary, that should help avoid having to mail more details to the IRS.  TT also doesn't handle short options well they provide all these drop downs and buttons, but if you select expired it doesn't allow you to input proceeds, so say they were sold either way, this doesn't matter as long as you get the right outcome on Form 8949 / Schedule D, and you have to input that leg was 'sold' on open date and 'acquired' on the close date etc.

 

Hope this helps.  If some other issue pls do post further.