To completely delete one or more batches, even if marked paid or published:

1. You'll need to enter a special mode that is normally hidden to keep you from accidentally using functions that may have unintended consequences.
   1. Under the "Account" Menu, select Advanced Options...
   2. On the page that loads, click on "Enable" for "Advanced Game & Invoice Functions".
       
2. Go to the invoices page and use the filter to search for the desired batches or invoices
    
3. Click the check boxes of the ones you want to delete.
    
4. Click  (at the right end of the action buttons)

All of the selected batches and invoices fully and permanently deleted from the live database. (If they are also in an archive, the archive will be unchanged). USE CAREFULLY.