A tax expert from TurboTax team suggested to delete the imported form, and then type all required information manually. In many cases, you don't need to type all trades --- TurboTax will ask just a few total numbers. But, they require to attach a copy of 1099b in PDF format. You can download a consolidated 1099 form from your IB account. I'm not sure if it's the right form because it's not just 1099b. It has information about dividends, stocks, etc... I'll talk to TurboTax today about that.
