https://www.flyertalk.com/articles/r...l-markets.html

At least you'll be able to transfer points between the two programs, but it's unclear at this point if you'll be able to combine elite nights between the two programs or not. If not, that could hurt people who split their stays between North America and the rest of the world.

While Radisson won't be the only program split up (Choice is split up even more), it's the first one I can think of where status has some meaning.