Why do some products rows are missing from the Bulk Editor screen.?

Why do some products rows are missing from the Bulk Editor screen.?

Only Warehouses having "Fulfillment method => DropShip or pickup". Shows the products in the grid.

For further details follow the link below:
https://help.boostmyshop.com/portal/en/kb/articles/mass-stock-editor-27-3-2019​