I paired my 530 with my Zwift smart trainer today in the hopes of using a local route for my workout. Everything I've read says I should be able to go in to training-->indoor trainer-->ride route and select from the route list on the head unit. The Edge 530 is supposed to then change the resistance of the trainer based off the route. It also is supposed to disable the GPS from my understanding (which makes sense). However, if I go through the above steps, and then hit "ride", the unit immediately asks if I want to navigate to the route. No matter what I pick, I just start riding and it keeps the grade at 1% and never adjusts the resistance. It also seems as if it's expecting me to actually ride the route. GPS still appears to be on.
I was really hoping to use this function as an alternative to a Zwift sub.