Re: Transferring bf4 DLCs

DLC does not transfer cross platform, even if staying with the Same company such as your 360-Xbone upgrade.  Only Premium transfers between platforms (but only if you stayed with the same company like you did) because Premium is considered to be a service by Sony and Microsoft instead of DLC.   So unless you are premium you will have to re-purchase DLC for Xbox One.  If you are not premium I recommend to purchase premium since it will save you money when rebuying the expansions.