Nuage plugin knob assignment problem

I’m trying to remap the nuage knobs for some plugins. I’m following the instructions found in the nuage courseware, but I just can’t make it work properly. I’m trying this with stock plugins, like the Vintage compressor for example. I manage to reassign parameters to the right knobs, but can’t make the old ones go blank. If I unlock the knobs, and close the window, they reappear when I open it again. Am I missing something ?
Thanks a lot,