To download your catalog data, follow the steps below in your Amazon Seller Account.
- Under Inventory, click Inventory Reports.
- From the drop-down menu, select the Category Listings Report (Note: this will only be active while the feature is enabled).
- Choose the product category for export.
- Click Request Report.
- When the report is finished generating click Download [https://sellercentral.amazon.com/gp/case-dashboard/download.html?contactID=34777983865&index=0428]
Once you have a CSV file, you can upload the file using the upload connection method and map the fields according to the CSV file provided by Amazon.
You can also export your Shopify products in an email format that is customized to the Amazon warehouse.
Please navigate to Setup New Feed > Update Existing products > Choose the Amazon templatehttps://sellercentral.amazon.com/forums/t/how-to-download-an-csv-list-of-existing-list-from-my-store/216357/2