Light mix questions

[fixeighted]

I notice that the denoiser in the rgb view is as expected but looking at it in the light mix it is completely different - although the settings are the same it is like it is set to strong rather than default (or otherwise), as the rgb is.
I also notice that the 'Transfer to scene' is greyed out , so what are the conditions to make it available?

[JonasNöll]

Hi, for the greyed out "transfer to scene", it is disabled during rendering. Once your rendering is finished or you stopped the IPR you can transfer the settings back to your scene.
For the denoiser, can you double check that you finalize your rendering as well and if the difference is still there once the rendering stopped before you switch between RGB and LightMix?

[fixeighted]

Thanks, your right about the transfer of course
The denoiser is definitely quite different. Especially through glass, though this is known and I'm sure will improve.
I think it's just a bit unsubtle and just doesn't work well enough with some images.
I can live with some noise