I hope someone will find those helpful
That’s a Lemmy problem, unfortunately. The links are all .ml links because that’s OP’s home instance, and (as far as I’m know) currently, there is no way to create instance-agnostic post / comment links. Compare https://lemmy.ml/post/19241099/13073901
, https://programming.dev/comment/11773309
, and https://pawb.social/comment/10354944
. They all lead to the same comment (the one that says “Are they?” one level above OP’s), but the bit after the instance name is always different, and Lemmy doesn’t have a way to convert a “foreign” post or comment ID to a local one. There’s an open issue about this on github, though, so maybe this feature will be introduced in the future. If you want to save the comments on your home instance, the only way to do that is to go through OP’s comment history.