If you wish to remove a product, you can either make it invisible in the current season or inactive across all seasons.
This will not remove the product from any existing sales order/s it is present on.
From Product Costing List View...
A = Active
V = Visible
Click the product you wish to remove
Deselect [Active] to remove the Product from ALL seasons
To view inactive Products from List View, remove the 'Active' filters
The inactive Product is crossed out
