I know it should be integrated in shopify but finally I opted for Hextom Bulk Product. In case you want a better solution than shopify bulk, you should invest 10$ by month with this plugin by hextom. It saves me a lot of time!!! I don't think shopify...

Switching from Woocommerce to Shopify to find out that Bulk Editing really doesnt work in shopify. Damn. It's slow. Can't select more than 50 products at once. This tool is really broken