If you need Amazon Seller Central statements containing transactions older than 90 days, you need to request them from Amazon. By default, Amazon archives statements after 90 days.
Follow these steps to unarchive your Amazon Seller Central statements:
- Login to your Amazon Seller account
- Click Reports > Payments
- Click All Statements
- Locate the desired time frame(s) then click Request Report
Once unarchived, Greenback is able to access the transactional data. Amazon will archive them again in 90 days, but the data will now remain in Greenback.
While they are accessible, you are essentially sharing them with Greenback just like they were new transactions being auto-fetched for you. There's no need to worry about duplicates; Greenback always searches for matching transactions and prevents them.