From what I can see in the
source code, I'd recommend setting up a redirect by adding the following line to the old filter list:
This should cause the extension to replace the existing one with the new one.
If the filter list is no longer online, Adblock Plus should continue to retry the download. Therefore the same could be achieved by us adding the old and new URL to
https://gitlab.com/eyeo/filterlists/sub ... /redirects .
Only if the filter list is listed at
https://gitlab.com/eyeo/filterlists/sub ... aster/gone, will the filter list be considered "gone" and the extension instructed to replace the filter list with a local copy in order to stop trying to download it (see
extension source code).