When I connect my Amazon Business app, it gives me an option to bring in an entire year of transactions. However, once connected, it only ever brings in the last month.

Thanks for raising your concern here, Shelley.

Let me share insights and direct you to the best possible help to bring your entire year's transactions from the Amazon Business app to QuickBooks Online (QBO).

QBO will only depend on the information Amazon Business or any third-party app provides. With that in mind, I recommend contacting Amazon Business app support to help you locate the root cause of why only last the month's transactions are being shown.

If you want to place your downloaded transaction to any specific account, you can read this article: Categorize online bank transactions in QuickBooks Online.

For additional questions about managing your transactions, click the reply button below. I'll be willing to lend a hand. Have a good one.