problems with 2.3.2 version

1. Updating from 2.3.1 to 2.3.2 wouldn't itself change anything about sound settings in the Mixer - more likely, you changed which soundfonts you are using, and that that is what caused the change. So you will need to try to remember which soundfonts you were using before and set it back that way. This too would not have changed on its own; it's an explicit step you would have had to take yourslef (perhaps you instaleld, or uninstalled, the MDL drumline extension)?

If that doesn't help, then in order for us to understand and assist better, we'd need you to atach a score you are having problems with, and say which soundfonts you are using (see View / Synthesizer, the Fluid and Zerberus tabs).

2. Copying a single note is indeed specifically meant as a way to copy pitch only. If you want to copy the whole chord info - including duration etc, then copy the whole chord, not just the note. That is, select it to get a blue rectangle around it (Shift+click does the trick is nothing is currently selected). BTW, this isn't new, but there were bugs in older versions where sometimes it didn't work as intended when copying single notes, and as far as I know these are all fixed now.