Purpose for Activity Notes in invoicing:
The Activity Notes functionality has a wider purpose, i.e. to allow a more verbose set of notes to be recorded regarding the history of an invoice and the items within that invoice. For example - "Called Debtor but couldn't reach them - left a message for them to call us back" etc.
How to use:
After generating invoices go to Auctions & Items - View Auctions - click on Invoices for the specific auction
Locate the correct invoice/credit note and click Notes in the 'Actions' column
You have the option to add a note in General, Payment or Collection section as below
Invoices/credit notes with Activity Notes will have the Notes button appear blue - (see invoice V3 below)
Those without activity notes will appear grey - ( see invoice V2 below)