The reason I haven’t created a ‘create nested FSM from selected’, is that in this process any transitions between the selected nodes (the ones that will go into the nested FSM) and the others that will be left in the root FSM, will be removed, and this could have create some confusion.
So even if that is added, transitions will be lost in the process. There is no real way of keeping them.
Copy pasting is indeed another option for that, though like above, transitions that are not part of the selected nodes, will need to be removed when pasting.