There is a similar request that is under consideration...
Yes, it's possible to download configurations but if I want to do a bunch of devices (maybe to make sure our backup cfg files are up-to-date after a system-wide software upgrade for example) it is a pain to repeat the process for every device. I'm sure this could be automated in cnMaestro.
https://community.cambiumnetworks.com/t5/Your-Ideas/cfg-backup-from-cnMaestro/idi-p/92499
Thanks
Don