Adding a scanned 1099-B has never been a known function of the TurboTax Business software. If that was working in the past, it was not a known feature. You can import 1099-B information into the TurboTax software, but not attach it as a scanned document. If you do need to file a scanned copy of 1099-B with a return, you would print and mail it as the efile software would not support an attached 1099-B.
