Bug in Amazon integration

Journaling in the Amazon integration is broken.  See the screenshots.  Specify Sales representative name = Amazon in the Amazon integration in Cin7 Core.  Specify Sales rep in the QuickBooks integration in Cin7 Core.  Then only the Invoices are journaled to QuickBooks with the correct Class.  Refunds are journaled to QuickBooks with the default class Amazon_US, which disagrees with the documentation.  

Desired behavior:  All Amazon transactions including refunds should be journaled to QuickBooks with the class indicated in the Amazon integration in Cin7 Core.