Hi
I see that you have a peculiar order statuses setup.
That's why it doesn't work properly I think.
Normally, the "confirmed" status is activated in "invoice" and the "created" status isn't.
And the data is sent to Google analytics when the order goes from created to confirmed based on these.
If you need to keep the settings like that, try changing the "single submission" setting of the Google Analytics plugin.
Also, after you change the status of an order in the backend, make sure that you go on another page of the backend before being logged out or changing the status of another order. That way, the javascript notifying Google Analytics can be executed.