Resolved overwrite existing date.

Hello,
You would need two templates, one to import new items with all the fields and the second one to update product stock with product_sku and product_in_stock. I don't see any other way here.

Yes, that's what I mean. Daily updates include new items and existing items often only the stock. I have to think of two templates. Or is there another method

Hello,
Do you have product_name field in your import file and is empty? That would be the only reason for product_name to get updated. If you want to update only product stock then product_sku and product_in_stock fields should be enough.

Not exactly what I mean. I have now updated to 7.>. I will try this first.
The problem is that the existing product_name will be overwritten by blank file.
The slug remains the same

Hello,
If you don't want to add any new products and update only the existing ones then in your template settings on File tab set Skip new items to Yes. This way the product stock of only the existing products gets updated.

Every day I get an update of a few hundred articles. I only want the stock to be changed. And new articles are added. The updates do not always fill all fields. So I get blank fields. Otherwise I need two crons with different templates.

Hello,
Are you saying you need to override date for products whose stock has changed? Can you give more information on what you are trying to do?