Timeslips 2011

SOLVED

Help - Apparently, I deleted a current invoice and can't retrieve it.

I had two clients with invoices that duplicated.  

The deleted the duplicate invoice for the first client and the second invoice remained fine.

Then I deleted the duplicate - or what I thought was a duplicate - invoice for the second client and both invoices for the second client deleted.

Is there a way to retrieve the invoice for the second client?