Thanks for your answers.
Now I searched 8606 and entered the contents about the traditional IRS contribution, $6,000 for year 2020.
When I asked to the TD about the backdoor conversion, I got the answer, "A roth conversion is only valid for the year that is currently going on. For example if you want to do a roth conversion in 2021 it is due by December 31st of 2021. So a roth conversion for 2020 was due on December 31, 2020. We are unable to back date any roth conversions. " and no 1099-R got from TD Ameritrade.
Does this mean I need not enter 1099-R for 2020? Can the conversion $6,000 for 2020 and $6,000 for 2021 processed to Roth in March 2021 be reported to the 2021 tax report?
