My question is opposite from everyone else's, as I am going from the Xbox one down to the 360. I have been playing black ops 3 on the Xbox one, and wanted to play it on the 360 also. The problem is, none of my progress has been saved. On the Xbox one I have all my weapons customized, specialist customized, everything how I want it. But, on the 360 nothing is saved and I'm level one.
So how do I transfer my progress over from the Xbox one to the 360? Please help, this is very annoying.