By mistake, user associated time entries with the wrong project phase and wants to fix the invoice and payment related to this invoice.
BQE CORE gives you an option to delete payments and invoices. When deleting invoices, CORE cancels your billing decisions and releases the unbilled (approved time and expenses) back into the database for later billing. In this case, you can delete the payment and then delete the invoice, make the correction to the time entries by moving them to another phase, and then re-process the correct invoice. You can also void the invoice instead of deleting it to track the action.