I have the same problem, spent 4 hours trying to figure out what was happening. I have multiple Schwab accounts. The clue something weird was happening when I downloaded my 1099-Div I was then getting a $3K federal credit, looking I noticed all my 1099-B were gone. I don't think Schwab has the power to delete (that could be a security flaw), it has to be coming from TurboTax.
This is the second time-consuming problem I have had with TurboTax. The first was it couldn't update and gave a 1603 error, I had to uninstall and reinstall TurboTax to solve that problem. For Intuit being a $137B company, I'm not too impressed. To top it off, they will send me emails congratulating me on my post. Just got one. "Your earned the 7-Day Streak badge". Seems to be a game to them. I'm just trying to get this done.
