There’s something about it though that’s not intuitive. When I think of combine with, it doesn’t come naturally to me to think of it as move to. When I combine two things, I have equal access to them, but that’s not how it is here, because I have owner access to the account the points are coming from, but not where they are going, unless that account too is mine. It helps me to think of it as a household in which we with mutual consent make the various accounts a shared pool and combine points.