Report Toaster: Custom Reports

I hit a brick wall with Shopify's order export CSV, since there's no way to find removed items from edited orders in the CSV file.

Report Toaster is a great app, simple, straightforward, powerful and very well priced. Kick the tires for free if you're on the Shopify Basic plan. You won't be able to export reports but you'll have full access to them. Upgrade for a very reasonable monthly fee.