@punjun2019 , yes, if the 2023 needs further amendment to correct the currency conversion, then you need to do that and then flow that to your 2024. However, without an extension you are coming up against the 4/16 deadline.
Just be cautious -- you are never going to be able to wring the last drop out of this lemon ---- FTC and Capital loss carry over are generally diminishing return efforts. Also ( and I have no way to prove this ) the more amended returns you file, the more you are likely to be challenged. It costs IRS quite a bit to process amended returns ( it is less today because you can e-file but it still needs to be looked at ) -- human intervention is expensive. That is my view.
Good Luck
