Yes, sync only works from MediaMonkey for Windows to a device.

So I've been using MM to sync to my two Android devices for some time now from my laptop with no problems. However, my laptop has just blown up and I'm thinking about replacing it with a big tablet - am I correct in thinking there's not really a way to sync one Android MM library to another?

Really weird to think about how to adjust this stuff when I've had a PC / laptop since the early 80s...