IDEX input shaper values not being set correctly

I had a heck of a time getting decent print quality out of my IDEX 500. It turns out that the input shaper values I set don't get applied on the toolhead switch. It's looking for a variable in the RatOS macro. I had to add the following lines to my printer.cfg in the RatOS macro:

variable_shaper_x_freq: [52.2, 48, 52.2, 52.2]
variable_shaper_y_freq: [42.6, 38.2, 42.6, 42.6]

These values are set in RatOS.cfg, but are set to 0. Does anyone know the proper process for updating these values? This works, but seems a bit user unfriendly compared to the rest of the setup.