When moving targets around in the sequence, the left pane doesn’t reflect the correct order and it does not match the actual target selected, to reproduce this, I created a new target “Pacman Nebula” created all the settings, then proceeded to move it up the list, however the UI shows that I have M33 selected on the left, but actually I do have PacMan selected
In the above
M33 = Pacman Nebula
Pacman Nebula = Y Cas Nebula
Y Cas Nebula = M33
If I save and re-load the Sequence it all looks normal!