Hi there, @jenglish922.
I'll share some information about how to manage transactions from your Amazon Seller account to QuickBooks Online.
QuickBooks only depends on the mapped category set from your app settings. Since it was categorized differently, I recommend reaching out to the app's customer care. This way, they can further provide information on how the transactions from your Amazon Seller account are categorized into QuickBooks.
You may also want to connect your Amazon Business account to QuickBooks. This will help you track your purchases in QuickBooks Online.
Come back to this post if you need more help with the integration. I'll be around to provide further assistance.