Plutonium

In Zombies Black Ops 2, when my friend host a custom game for us to play, my progress(kills, downs) resets when i close the game, like it never happened.
I tried the console comands "updategamerprofile; uploadstats" but the game doesn't even appear on theather.
However, when i'm the one hosting, my progress is kept if the game is closed.
This is unfortunate because i wanted to grind the ranks and get high rounds, but i seams like i'm bugged. I don't know what to do. It discourages me from playing.
If someone know a possible fix, it would be greatly appreciated.