PIM - Unassign Categories within the Template

There is a template that you can assign multiple products to categories.  But if product was assigned to an incorrect category, there is no way to unassign and reassign within a template, or even to make a correction for multiple products at once.

Would like to suggest a way that you can unassign products from the current category, and reassign the product to the correct category in the same template.  This would be a huge time saver so that you are not manually unassigning products and then submitting the template to assign to the new category.

Or even be able to unassign in one template and reassign with another template.  But the ability to do this in one would be much more efficient and would be one less template to fill out.