I am thinking of migrating my 994 to IoP this week.  Instructions look straight forward.  I am probably 95% Insteon.  I have a serial PLM on the 994 and a USB PLM in the closet.  Question is should I just use the USB PLM on the Polisy for the migration?  Or would I be better off transferring the Serial PLM from the 994 to Polisy?  I would have to build a serial to RJ45 cable.  I am thinking it would be safer to use the USB PLM.  What about all the links stored in the PLM?

46 minutes ago, CPrince said:

I am thinking of migrating my 994 to IoP this week.  Instructions look straight forward.  I am probably 95% Insteon.  I have a serial PLM on the 994 and a USB PLM in the closet.  Question is should I just use the USB PLM on the Polisy for the migration?  Or would I be better off transferring the Serial PLM from the 994 to Polisy?  I would have to build a serial to RJ45 cable.  I am thinking it would be safer to use the USB PLM.  What about all the links stored in the PLM?

Doesn't matter. Whatever makes most sense and easiest for you. They both perform the same

I’d use current serial PLM to control number of things changing at same time.

13 minutes ago, hart2hart said:

I’d use current serial PLM to control number of things changing at same time.

I didn't reply the first time I read this thread but I agree with @hart2hart

A "Replace Modem" or actually "Restore Modem" when the Insteon address changes is very intensive.  It re-writes all links to all devices.   Cross the conversion to USB when you're forced to by a non-responsive PLM, until then just use the 2413s with Polisy.

@lilyoyo1@hart2hart@MrBill Thanks for the info.  May put this off till next week!