In my opinion, don't file an amended return at this point. If there is no tax change as a result of adding a 1099B, an amended return would not be needed. Also, throwing an amendment into the works at this point would only cause processing delays and delays in handling the inquiry.
If IRS is making an inquiry; answer the inquiry.
Send a clarifying answer, all with copies of appropriate documents. Send return receipt requested to make sure you have proof of response.
If anything needs to be adjusted, one way or the other, the IRS will probably do the adjusting as a result of the inquiry.
Just stay in touch with the IRS and answer promptly and within the time frames.
**Disclaimer: Effort has been made to offer correct information; but due to the discussion forum limitations, the poster disclaims any legal responsibility for the accuracy of the poster's response**
