In this (3 MB) animated gif, the Dry'Wet knob is being modulated from within the plug-in.
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https://i.imgur.com/WkWLLci.gif
During playback you can see the knob on the GUI move. When the envelope is in Write mode you can see the EnvCP slider move BUT the values are not written into the envelope.
If I disable the internal modulation and drag the knob myself then the EnvCP slider moves AND the values are written. All as expected.
Is there a way I can get the internal modulation to be written? Or is it a Bug? Or an FR?