Yeah the default click abilities are kind of out of date... I don't have a ton of alts so I haven't really had a ton of opportunity to update them overall.
The file you're looking for is _Fetish_mainhud_raidabilities.xml. You'll need to get the ability number, to do tht you can make a macro to cast the spell in question and put it on a hotbar, and then save your hotkeys to text file via the "/savehotkeys hotkeys.txt" command (might have an underscore, not in game atm). Then open the tet file and find that hotkey and it'll have the spell #.
If I can get all the new spell numbers I can try to update that for the next time I push out a zip file.