Hello,
I noticed that working with space characters for saving labels in user maps will clear them. For example, use "Attack Env" for Knob 1 of the user map 3. It will work for a few time, and when you will change some parameters in MCC, the label will disappear. I cannot identify exactly why it happens but I tried a lot of configurations and I conclude that you have to use an underscore to keep your labels safe.
Can you confirm this behaviour?
Thanks,
creal.