First of all ==> Seriously?!  What tax cave have I been living in for the past 30 years that I was not aware of that MAJOR detail?  So, you're saying that if Folio has short term transactions notated with "A" where cost basis is provided to the IRS, and likewise, long term transactions notated with "D," that I only have to enter the ST totals & LT totals, with their corresponding gains or losses?!  Inconceivable 🙂   Can you tell me where it says that in Sch D or Form 8949 Instructions, or is it somewhere else, like in the Code?  Wow.