You can save time when you need to change the category of multiple products by uploading an Inventory File. Go to Add Products via Upload and generate the appropriate inventory file template. Enter your product information and include the new category in the Item Type Keyword column.

Why did Amazon change my product category?

Firstly, Amazon bots or Category Specialists may make the changes if they don't agree with the initial category selection, potentially due to supporting evidence from customers/other sellers.

Can we change category on Amazon?

If a category is closed on Amazon then you can apply for a category approval for the same. Here while creating a listing of a product you will be given an option to select the right category of the product you are listing.