[an-unknown]

As far as I understand it, this change is not supposed to change anything about files posted on Discord, as long as you actually view the channel where they were posted. Means: if you find an old post on Discord with a file attached, this should still work. This change is only supposed to make it impossible to take a link to such a file and post that link outside of Discord (e.g. on a website), in which case the link should then expire within 24h after the enforcement is implemented.

[pests]

Yep - lets not forget links are an abstraction Discord provides for us to access the files. The files themselves would be linked to messages via some internal id, correct? So they can re-generate the link on every message view.