UZB-7 & PC Controller

I've setup a test network with a C7 and PC Controller as a secondary. Have a couple of devices that have learned some weird routes back to the hub and trying to force them to another return route but not having much luck as whatever option I try nothing seems to take effect. I know eventually this will re-learn anyway but i'm learning.

My UZB-7 has not been flashed, is this required?

Anyone get this to work or have some pointers?