Why can't I use calling cards in BO2?

[Dancingbacons]

Whenever I choose a calling card, exit the game and open it again, I see that my calling card disappears. Is there a way to solve this or we can't use calling cards at all?

[Yellow]

You aren't able to select calling cards/emblems

[Xerxes]

The functions needed to save and retrieve them are not emulated.

[Zplur]

Thats very unfortunate