Hello Forum folks. I'm new to this forum however being a member for many years I still had to re-sign up due to credential issues. I've been using UDI 994 ISY for many years. I've read the forum's responses to this (Polisy-EISY) topic and have learned nothing. I'm a long time Insteon house and survived Insteon's fall and resurrection. I purchased several more Insteon devices including, yes, the i series of devices. To my disappointment, I learned the hard way, my ISY does not support these new devices. Insteon support recommended I purchase UDI's latest product, the EISY. Outside of still being totally incapable of discriminating between Polisy and EISY, all I really want to know is; When I upgrade (to EISY or Polisy) will my existing programs and scenes be recognized without re-writing or altering them. Any help is appreciated.