Single post in Quality of Life changes [UserScript]

I have a question regarding Delta Pokémon evolutions. Oshawott is classed as a water type. If I have a delta Oshawott with the fighting type. If I evolve this Pokémon, does it only count as the fighting type or does it also count as a water type? If I have the answer to that question, I know how to setup the Pokémon evolutions sorter. Thank you~