The name change - as I have stated before - has existed for decades all over the world, and the USA was just about the LAST country where it took effect (or not the name change, then, but what it resulted from, namely the division between religious and business/corporation activities).
The magazine is printed by the WTBTS - which deals with printing etc. But the congregations are united in whatever the religious organization is registered as in the particular countries, such as "JW in France" (or correctly "Temoins de Jehova en France"), "Association of JW in Spain" or something like that, etc. In the US, it is the Christian Congregation.
I know it is hard for us men to keep two thoughts or things separated at the same time in the head, but try! You know with Kindereggs it's THREE things, and kids manage to do so!