Where products are added to categories based upon the values of the attribute-to-categort-mapping columns, they are not removed if the value in the column is false.
To reproduce:
Export a product which has is_food true
Change is_food in the exported spreadsheet from true to false
Import the spreadsheet
Clear cache
Go to the food category and the product is still there.
This also applies to is_baby, is_household and is_personal_care.
Where products are added to categories based upon the values of the attribute-to-categort-mapping columns, they are not removed if the value in the column is false.
To reproduce:
This also applies to is_baby, is_household and is_personal_care.