Trying to get compiler to choose correct arch_data

checkpoint_exerpt.cpp

   // Function object for save_checkpoint
    namespace detail {
        //Properly handle Component Clients
        template <typename Client, typename Server>
        void arch_data(hpx::serialization::output_archive & ar
            , hpx::components::client_base<Client, Server> && c)
        {
            hpx::future<std::shared_ptr<Server>> f_ptr = hpx::get_ptr<Server>(c.get_id());
            std::shared_ptr<Server> ptr = f_ptr.get();
            ar << ptr;
            std::cout << "It worked!" << std::endl;
        }
        template<typename T>
        void arch_data(hpx::serialization::output_archive & ar, T && t)
            {
                ar << t;
            }
        struct save_funct_obj
        {
            template <typename... Ts>
            checkpoint operator()(checkpoint&& c, Ts&&... ts) const
            {
                // Create serialization archive from checkpoint data member
                hpx::serialization::output_archive ar(c.data);
                // Serialize data
                int const sequencer[] = {// Trick to expand the variable pack
//                    0, (ar << ts,0)...  // Takes advantage of the comma operator
                    0, (arch_data(ar, std::move(ts)),0)...  // Takes advantage of the comma operator
                };
                (void) sequencer;    // Suppress unused param. warnings
                return c;
            }
        };
    }