I moved over to ISY on Polisy a few months back and it's been great so far.  Today I had to replace an Insteon dimmer switch and it didn't go as planned.

Added the new switch in the console then did the usual replace in console.  I don't recall the exact wording but it said something along the lines of needing to open a new window.  I exited the console and restarted it.  The new device had taken the old ones place as it was supposed to have, showed proper new ID and such but the new device wasn't responding to any scenes that the old device was in.  Tried a restore on the device but still wasn't reacting in scenes.  I queried the devices link table and it only had 1 record in it.  The ISY table for the device showed the same.

Luckily the device was only in a few scenes so I removed it and readded it to each in the console which got everything back to the way it was supposed to be.

Has anyone else had success replacing a device in IoP?  Is there a step I missed somewhere (I recall the 994 used to reboot on a replace)?

I have same issues when replacing insteon devices. I don’t really worry about it and just manually fix it each time presuming they would eventually fix.