You can easily update an existing product import so that you don't have to do the field mapping every time. If you have not yet created a product import, you can find instructions in this article "Product import - PRO Backend".
- Navigate to your product imports via "Administration > Import data > Products".
- Select the import you want to update.
- Select your updated file.
Important! The structure of the file must be exactly the same as the first file that was mapped into the field mapping. Otherwise, you will have to reassign the fields.
- Afterwards, you have to import the file again. You can define how the data is to be imported in the tab "Settings > Import Strategy".