So I have the new Magic Keyboard and I like the minimal design. I have it working with my Mac Pro, Macbook Pro and a PC. However, and this is a big problem, is that it needs to be shut down and paired again every time I switch computers. So I use it with the Macbook, power the laptop down and then it will no longer work with the Mac Pro until I go into settings and remove it and pair it up again. Power cycling the keyboard doesn't seem to have an effect. Is this how it is supposed to work? Any tricks to this? Thanks!