I see the same thing here with the Sonnox Denoiser in Wavelab 7. But the denoise results should be the same between normal and batch, at least they are here - the batch processed files are denoised the same. It’s just that the curve display is not there when you unload and reload the plugin with preset, even just in the Master Section (try that). And it’s all the same with the Sonnox in Wavelab 8.5.