missing MINT channel connections

[ryu-bu]

Components are correctly generated, but only meters are connected via channels.

LFR code:

module transformation (
    finput B, C,
    foutput d_out
);

    // oil (carrier load) ignored
    // add plasmid and cell suspension
    flow mixture;
    assign mixture = B%500 + C%500;

    // mixer is a heat shock mixer
    #MAP "INCUBATOR" "~"
    assign d_out = ~mixture;

endmodule

Generated MINT:

DEVICE transformation

LAYER FLOW 

PORT port_1 portRadius=2000 ;
PORT port_2 portRadius=2000 ;
NOZZLE DROPLET GENERATOR nozzle_droplet_generator_1 ;
PORT port_3 portRadius=2000 ;
PORT port_4 portRadius=2000 ;
NOZZLE DROPLET GENERATOR nozzle_droplet_generator_2 ;
MIXER mixer_1 ;
INCUBATOR incubator_1 ;
PORT port_5 portRadius=2000 ;
PORT port_6 portRadius=2000 ;
PORT port_7 portRadius=2000 ;

CHANNEL channel_1 from port_1  to nozzle_droplet_generator_1 2 channelWidth=400  ;
CHANNEL channel_2 from port_2  to nozzle_droplet_generator_1 4 channelWidth=400  ;
CHANNEL channel_3 from port_3  to nozzle_droplet_generator_2 2 channelWidth=400  ;
CHANNEL channel_4 from port_4  to nozzle_droplet_generator_2 4 channelWidth=400  ; 

END LAYER