I need a sales report for a particular product and its variant SKUs. “Retail sales by product variant SKU” seems like it should do the trick, but apparently “The reports show only sales that were made at a POS location.” https://help.shopify.com/en/manual/reports-and-analytics/shopify-reports/report-types/retail-sales-reports
Can I see a report for sales over time, by variant SKU, that includes both POS sales and online sales?