Helpful info, thank you - you say "if I decide to mail the 8453" - are you suggesting I just organize the info, put in my cost basis in the 8949, and see if IRS has questions it?
There is no way to efile and attach a pdf/screenshot and say "Dear IRS, check this out if you doubt me about the cost basis." ?
I'm just wondering if voluntarily supplying more info about the forced liquidation etc just invites more scrutiny vs just listing the actual cost basis, and being prepared with the proof IF IRS wants more.
