VST Plugin Quick Controls keep reverting to defaults

Cubase 12 Elements. I’m learning to use Quick Controls and Mapping. I set up a VST plugin to respond to QCs different than its default parameters and they work fine. But as soon as I bring the plugin back up to the screen, the QCs revert to the default parameters. This happens on various different plugins. What might I be doing wrong?

Could you post screenshots of how you do that?

Hi,

Do you use the Track Quick Controls, or the Focus Quick Controls?

I’m not yet sure of the difference. See my screenshots. This one shows my setup with four knobs on my Korg Modwave assigned to QC 1-4 and on the plugin to four parameters, the first being filter cutoff frequency. When I bring the plugin back up, that switches itself to the plugin’s default parameter of the top left control Tuning. Why?