Schwab notified me of a corrected Form 1099. I re-imported the data for all 1099s, and TurboTax informed me that it would remove the old imported data before importing the new. Once the process was done, the lines on the 1040 for interest and dividends were lower than they should have been. So I went into the 1099-INT and 1099-DIV and re-typed the main interest & dividend amounts (changing their color from green to blue), and, lo & behold, the 1040 corrected itself.