Does SKU Manager create products?
Short answer
No, SKU Manager does not create products.
It only updates the SKU and barcode fields on your existing product variants.
SKU Manager does not create products, duplicate products, or add new items to your catalog.
What SKU Manager can change
SKU values on existing variants
Barcode values on existing variants
What SKU Manager will not do
Create new products
Duplicate existing products
Add new catalog items
Create new variants
This means you can use SKU Manager to update identifying codes on products you already have, without worrying about extra products appearing in your store.