Thanks ToddL99,
After two hours of trying to get help on the phone, and the absurd online chat asst, I finally ran into this help blog. Your solution works - e.g. no negative numbers in basis or proceeds, and simply list the loss amount as basis, and proceeds as zero, will get you the loss in the correct column on Sched D. And yes, the brokers aren't doing us any favors here, either is TT, but at least there is a workaround.
