I was ready to e-file my return until I got an amended 1099 document for one of my Schwab accounts (I'll call it "account A123"). I need to reimport data for just that one account. Since TurboTax does not have a "replace imported data" feature (is that right?), I started by "file" and then "remove imported data" and then I chose the two items (1099-DIV and 1099-B) associated with account A123. I was able to delete the data this way, and I checked to see that the data for my other 5 Schwab accounts was not affected (i.e. they were still all there.)
However, when I next re-import data from Schwab account A123 (with the amended data) into TurboTax, I was able to choose account A123 from a list of all my Schwab accounts, but when the data import was completed, all the data for all my other 5 Schwab accounts had been deleted, leaving me with just the imported data for Schwab account A123.
Did I do something wrong? If not, this seems to be a major TurboTax software bug. How can I reimport data for selected account(s) from selected brokerage firm(s) without any impact to all the other account data that had already been imported?