https://community.cambiumnetworks.com/t5/Your-Ideas/Manage-SMs-via-their-APs/idi-p/78032
(For anyone that searches for this ability and finds this thread - go plus one that suggestion.)
The AP to SM proxy is kind of one of those amazing features that this line of radios have. Not utilizing it in cnMaestro is kind of a let down.
I'm guessing it's still not made it to any future feature list yet?