Rank reset after local co op

[TattooTerror]

Hi there, I've just reloaded after playing a coop campaign to find my rank has been reset from 6 to 1.

I still have my achievements and unlocks from my single player game however my in game stats no longer show that I've played horde mode or even my kills from single player or coop.

I even still have my horde avatar award.

Any ideas guys n girls?

[TattooTerror]

Oh and it is showing my kills from where I continued my single player game (breakneck run onwards)