Downloaded the PM trial yesterday. Most of my NEF files display the changes I made in NX, but not all.
In a couple cases the color-to-bw change is not displayed. On a few others it's (I believe) the control point changes. Oddly, it appears that bw and control point changes are displayed correctly in other files. I am only working with a small set of images so I don't know if this behavior is peculiar to these few files.