Prior to v1.8.0 it was possible to select notes and copy either just the parameters associated with them or both the selected notes and their parameters and then copy them to another track. This does not work anymore.
Can you describe your process more specifically? I’m still able to do this by selecting the notes, selecting the parameter nodes with ctrl+alt+A (or selecting with the mouse while holding ctrl), copying both with ctrl+C, then switching tracks, clicking the piano roll to focus it, and pressing ctrl+V.
This is very similar to the way I do it. I am on a Mac, though - perhaps that’s the reason. The last time I was able to use this feature I was on a Windows PC.