HI CharleneMae
I did contact support and they were insistant the transaction was VAT filed in the previous return, which is isn't.  I had to tell the person in support repeatedly that it wasn't filed already. 
I am reaching out as she wanted to undo our previous VAT return, despite the fact the transaction in question is not in that return.  All Quickbooks help guides say exceptions related to changed filed transactions.  this is not.