I have the same issue as well. The tool (bought the Premier TurboTax to handle this specifically) states that I should not edit 1e at all. Quoting the tax guidance built in:
If you received a Form 1099-B (and in nearly all cases, you will), you should always start by entering the cost basis as reported on your 1099-B on line 1e, even if the basis on your 1099-B might be incorrect. Then look for a supplemental statement from your financial institution that shows the corrected basis. (IRS reporting rules require the institution to report the non-corrected basis on Form 1099-B, even though the institution usually knows the actual corrected basis amount.)
Since the expert's advice conflicts with the software, who do I believe? I will keep trying to get the software to adjust the cost basis, and leave box 1e at 0 as reported in my 1099-B.
