Ah, I did not even realise that. The link from the guide (How to configure IR remote control) to an example of a configuration file is what I used as a base. I am blind - the article does show a link to a file with toml extension for the new CE19.
I also checked some of the remotes from pinned thread of Repository for AmRemote and Meson IR Remote Controllers (Repository for AmRemote & Meson IR Remote Controllers) and the keymap files were the same.
No excuses for being sloppy. Thanks for the pointer