It's working for me, mostly. While testing it, I see the following:
Expected results:
1) Select a group of track with either Ctrl+Click or Ctrl+Click-n-Drag
2) Hold Ctrl and add emulator
3) Hold Ctrl and adjust settings and all change
Unexpected results:
1) While still holding Ctrl, de-select a track
2) Make an adjustment on the de-select track while still holding Ctrl and it adjusts the other grouped tracks.
3) Release Ctrl and change an emulator the de-selected track
4) Hold Ctrl and move the gain or trim on the de-selected track; all tracks responded to the settings
5) Other setting respond in weird ways as well like have moving the grouped tracks from S-Type to N-Type move the de-selected track from N-Type to A-Type.
It seems that grouping gets a little lost at times depending on holding or releasing the Ctrl key or making a change on a de-selected track.
Interesting stuff.
Matthew