I actually spoke to someone named Ran at UD after my last post and he mentioned the option of removing all previous links at install time. I have an Excel spreadsheet with the Insteon address and location of every piece of Insteon equipment that I have in service. Looking forward to delivery of ISY on Wednesday from SmartHome - I bought the ISY994i/IR PRO so I can use my Pronto IR remote. I did not need the PRO option but SmartHome does not sell the IR unit in the standard bundled with the 2413S.
This is quite a different world than X10 which I have been using for 30+ years since the late seventies when it was introduced and sold by Radio Shack & BSR. Fortunately I am a computer consultant so all of this makes a fair amount of sense and I have an ethernet switch in the Living Room where the ISY is going to live
Thanks for the help
Burt