Somehow I generated a bill and transmitted to the client, but it's not showing up in my system.  Before I realized this I created a new invoice and it somehow includes all the timeslips from the 1st bill plus the extra date range I included.  I basically billed the client twice for some time and included some additional time that should have been billed.  I'd like to cancel the second invoice and rebill them for just the correct date range of time. Can you tell me how to do this?  1st invoice was from 10-1-20 thru 12-31-20 and 2nd invoice should have been 1-1-21 thru 1-31-21 only but it was 10-1-20 thru 1-31-21.