Hi Moritz, the Total Sales export column is a Post meta value assigned to Products and the value is maintained by WooCommerce. As new Orders are generated this value is incremented by WooCommerce. I understand this is confusing for users expecting a dynamic value that adjusts to date filters (which it doesn’t).
In the 2.0+ series we can look at adding filters for individual export fields like Total Sales but have been reluctant to do this as it will further clutter the Export screen.
