If I have multiple outputs from a single instrument, Studio One insists on grouping them all together in the mixer. If you try to drag one of the output channels to another location, it auto-selects and drags all of the other channels from the same instrument with it. Also, the tracks are forced to stay in their output number order.
This can lead to a situation where instrument types cannot be grouped together, which can become confusing.
Please remove this restriction and allow all mixer channels to be moved freely, no matter their origin.