I have to file corrected form 1040 because client received brokerage statement, 1099 int div b,, after original return was filed and didn't know it was coming. Original 2023 1040 was e-filed, but the client wants to mail the 2023 1040x. I haven't done one in a while, so do I have to attach the new brokerage statement 1099s to the paper file 1040x? Sorry if this is a stupid question. Thank you