I am getting an incomplete import of a 1099-B. For SHORT options contracts that expired worthless, the cost basis is importing as (null) when it should be 0.00.

I have almost 200 of these entries where TurboTax needs more data (it requires me to click on each one and enter 0.00 for the cost basis)

is this a known bug and can it be fixed?

TurboTax 2018 Premier (MAC download)
Merrill Lynch 1099-B
MacOS Mojave 10.14.3

For comparison, my 1099-B import from TD Ameritrade handled the short options just fine with 0.00 cost basis.  I wrote to Merrill Lynch and they responded that it's a TurboTax issue.