What is the difference between Overwrite and Increase option on the Upload Inventory screen?

Overwrite existing product details with file: Select this option if you are updating product information via a file upload. 

• Example: SKU_ABC has a quantity of 1 and you want to overwrite this quantity to adjust it to 3. 

Increase existing product quantity with file: Select this option if you want to add quantity to the existing product quantity in your account. 

• Example: SKU_ABC has a quantity of 1 and you want to add 3 for a total quantity of 4.