Networks, Wires and Cables, Oh My!

To all,

I am using CREO 3.0 M090.

When I route a cable or wire using a network everything is fine.

When I modicy the Wire I see that it says Simple Route.  It appears that it loose the connection to the network I used orignlaly to route the cable or wire.

Is there any way I can find out the name of the networks that was originally used to route the Cable or Wire?

Is there a config setting that I need to set?

Thanks for your help.