ADE ~> Outputs to be saved

 Dear all,

I have question about how ADE managing its outputed node/pins.

I open ADE -> Outputs -> To be saved -> Select On Schematic
I have selected the pin on an Instance from schematic.
similar below:

I44/vout1
I44/vin2p

Then I go to Simulation -> Netlist -> Create

The value under save line in the netlist is

save I44:6 I44:1

My question is how did ADE convert the value I selected?

That's all.
Thanks.