you can just make a copy of the /nsr/res before making a change to the 
networker configuration.
The /nsr/res holds the networker configuration files.

Anyway, a good practice is always to make a copy of the /nsr/res after 
configuring networker, that way, you can always revert to a previous 
configuration.

you can use nsradmin to open the copy of the /nsr/res to check about previous 
settings.

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