GamerScore not updating across all platforms

I updated my GS last night and instantly my new GS was showing on my xbox one. I added more GS today and when I plug my USB into my xbox 360 it will not sync so my xbox one still shows my old GS.

Anyway to fix this?

I think just give it time it should.
Dont do to much at once.

So for some weird reason I need to be logged into my Xbox One / PC.
When I stick the USB into the Xbox 360 it will then auto sync.
If I turn all systems off then stick the USB into the Xbox 360 then turn the Xbox One on it wont sync the Xbox 360 stats and re write the old ones.