Credit Notes Are Now a Payment Type
In our latest release we are changing the way we deal with credit notes. Once the new version is released you will be unable to create new credit notes or view historical ones in the way you are used to. Instead they will show as payments against the sale that they relate to, with a Type of 'Credit' (so you'll be able to see them in your Payments list).
To create one simply click one the Add a Payment button on your Payments page and select the Credit item in the Type dropdown.
Any credit notes that you currently have in the system will be reclassified as Payment (Credit) for you. You don't need to go back and change these manually.