Release Invoice from Enrollment Order
Note: During the process of creating a Credit Note you are asked whether to unhook the Invoice from the Order immediately. If this is not done you can do so later by following this guide.
To be able to disconnect the invoice from the order so that the linked Invoice does not appear inside the order you will need to navigate to Tax Management → Invoices in the Invoice of interest click Menu → Invoice Details and Payments:
From this screen click the blue button Unhook the order from the invoice:
Thiswill result in the Order no longer being linked to any Invoice and it will be possible to Invoice it again.
This procedure is useful if a Credit Note has been made of an Invoice issued with incorrect amounts and you want to reissue it by attaching it to the original Order.