@Edent I ran into this recently: https://todon.nl/@benjamineskola/109341966082818336
I had assumed that an ID of a post on another server is effectively scoped to that server, so when I look for your post on my server it's `your.server/1234` which is different from `my.server/1234`.
@Edent admittedly this is because I was being lazy and trying to deal with the API purely with string manipulation rather than doing it properly :)