Got Kingsport horror about a month ago. Some King in yellow mythos cards call for all monsters to move (i.e the next act begins). How does this work with the rift track? Do ( potentially) 3 rift markers get placed because the movement would match three different movement patterns, or do none get placed because the movement on the card does not exactly match the movement patterns on the rift track?

Since there's no exact match, no rift progress marker is placed on any rift progress track (there's a bunch of cards coming with different expansions having similar "everything moves" effects, KiY ain't the only one. See it as a moment of respite)