I hadn’t realized a message in the Archlinux Gitlab, the timezonemap developer closed the issue telling this was finally fixed in timezonemap 0.4.5.4-1 five days ago. Manjaro still has 0.4.5.2-2 so as soon as the update arrives, you will be able to rename back the xml file. The new one it’s currently only available in the unstable version.
If you need it and don’t want to switch to the unstable version, there’s a specific thread for requesting packages to be added to the stable version:
Happy New Year for you too! 