Hi Davedog
When an online payment is made in AccountRight that particular invoice is closed and the system will generate the necessary Recieve Payment transaction. This particular transaction will go to the Prepare Bank Deposit window/undeposited funds account. The reason for that is that when the money is deposited into the bank overnight MYOB does a combined amount for all the payments made during that day. As a result to match it to a bank feed transaction you need to have the one transaction in the Bank Account, thus you would prepare the bank deposit with the necessary transactions.
From a bank feed transaction point of view, this transaction is not auto-matched and the user would need to go to Find and find that Bank Deposit transaction to match with the bank transaction.
Our Help Article: Online Payments does go through handling the payment in your company file.
Do let us know if you require further assistance in regards to that process.