I finally decided to upgrade from my C-4 I got back in 2018. My C-8 Pro just came in today. Started the process of migrating but since I'll have to mess with all my zwave I'm going to postpone the rest until tomorrow.
I didn't really need to upgrade from the C-4 but I've picked up some 800 series switches and I figured it's about that time. Over 7 years is a hell of a run for tech.. Never had any major issues.
Wondering what to do with the C-4 since it still works perfect.
Damn.. Mine was $149.. I didn't see any additional discounts. Maybe I was a day late.. Guess I'm definitely a dollar short now haha
The good news is that this should be the last time you’ll ever have to go through a manual migration like this.
In seven years when you get the C-8 Super Pro Extreme, you won't need to mess with anything, anymore. Just plug it in, tap migrate, and enjoy the new features right away—no more tinkering required. 
Thank you for being with us since the early days. We truly appreciate your support and are glad you’ve been part of the journey.