I have tried numerous different things to try to get my own map cycle to work and it refuses to use anything but the default. I have my config setup for a coop server from the reference of the google doc provided in the steam announcement. After setting my map cycle and fixing the typos, the maps I set do not work. Yes map cycle is enabled, I have also tried it with just one map. And of course I have the ClearArray part.
Edit: This is on Linux