Ocean: saving and recalling current wave forms

Dear All,

I am writing ocean scripts using version IC618.070. 

Typically I am using distributed processing, and saving current wave forms as follows:
  save( 'i "/ADC/vdd" )

When I go to retrieve the waveform, this no longer works:

  iave = average(  i("/ADC/vdd" ?result "tran" )  )

After checking to see what results are available, I see that the current that is saved is named "ADC.39" .

Adjusting the equations as follows works:

  iave = average(  i("ADC.39" ?result "tran" )  )

Why did I lose the pin name?  I am concerned that if I change the symbol I will need to adjust the port number(?) in my scripts.

Thanks,

Paul