7th Gen Aprimons - Heartgold and Ultra Moon

So I read that you can breed Heartgold pokemon with Alolan pokemon in USUM and get Alolan offsprings with the Heartgold pokeball. So I caught a random male Grimer in a Friend ball in Heartgold and then moved it to UM. Proceeded to breed it with an Ultra ball power of alchemy Alolan Grimer female. All of a sudden - ALOLA!!! Got a friend ball Alolan power of alchemy Grimer offspring. Sharing so if someone might want to try - it works!