I'm planning to trade a Jangmo-o from SM to USUM because I started Ultra Sun from beginning. When this Jangmo-o evolves into Kommo-o can it learn, let's say, Close Combat? Gamefreak gave Kommo-o better movepool in USUM, but can Kommo-o from SM learn the same moves as a Kommo-o in USUM?
Yes, Kommo-o can learn Close Combat at Level 75 in USUM, but not in SM. I keep switching the tab between "Sun/Moon" and "Ultra Sun/Ultra Moon" and from the looks of it, they just added the move to Kommo-o's level-up learnset. In USUM, apparently Kommo-o cannot pass down any egg-moves (like Counter, Dragon Breath, and Reversal in SM).