VAT

Hi

I only use quickbooks to submit VAT returns, so input invoices quarterly when preparing the return.  We prepare on a date payment received, and an invoice for 31st April was paid in June and therefore falls in July return.  However, I cannot edit the VAT to include this as an exception, or change the date of the invoice so it is in this quarter.

Any help would be gratefully received.  I'm also assuming I am unable to delete and re enter the invoice as it wont let me do that either.  

How do you incorporate the exceptions if thats the correct way to do it.