Hi @fanfare @Mike9241 @JulieS ,
I greatly appreciate all your replies! The problem bothered me for years and made me very depressed. I read all kinds of investment forums regarding this topic. But the more I read, the more confusing it is.
I chatted online with TDAmeritrade again today. Their answers confirmed what you all said. They do carry over the disallowed wash sale loss to later transactions as extra cost basis for the triggering stock.
Thank you all so much! I'd very much like to show my appreciations for your kindness. Please kindly send me a private message with your email, then I will show my appreciation. Thank you all again!
