sensor factory sensor graph

Hi I have a sensor factory sensor with two ports on my switch. On map designer I have added a live graph of this sensor; for some reason the labels on the graph look different than the one that is for single port sensor i.e. on this factory sensor graph the: yellow line says Traffic Total blue line says Traffic Out thick green line says Traffic in

whereas for the other sensors with the single port: yellow line says Traffic Out blue line says Traffic In thick green line says Traffic Total

Here is the screenshot (http://oi59.tinypic.com/30m5pg6.jpg), top graphs is for the single port sensor and bottom one is the three ports sensor factory sensor

Following is the Channel Definition for this sensor factory sensor:
#1:Traffic in
Channel(2494,0) +  Channel(2497,0)

#2:Traffic Out
Channel(2494,1) +  Channel(2497,1)

#3:Traffic Total
Channel(2494,-1) +  Channel(2497,-1)

I would like to keep the same labels/lines like in single port sensor for all the factory sensor graphs.

Any help would be much appreciated, thank you.

#1:Traffic Total
Channel(2494,-1) +  Channel(2497,-1)

#2:Traffic In
Channel(2494,0) +  Channel(2497,0)

#3:Traffic Out
Channel(2494,1) +  Channel(2497,1)