I converted all the tools I wrote that the mods whom work with me/the broadcasters I work with use, to use the broadcasters authentication/oAuth on the new official topic without issue. Given for the most part I already had the right oAuth key(s) with the right scope(s) on already.
Course we have centralized tooling to the channel(s) so making a fix so it works for all the mods is straightforward.
Talk to your developer, or if it’s you, and just update the programs you use (if you can), or write new tools.