I have manually added to some upsell products to the products.
If I want to remove them, what to type for the column "upsell_skus" in the import csv files?
Yes, You are correct.
You need to keep CSV file with two columns.
Where sku is main product sku and upsell_sku is list of upsell products.
okay - i understand , so assuming your question here is how to removed Upsell products from the existing product sku - using CSV import.
So if you wanted to remove that UpSell Products from that assigned product - in your csv file you need to keep blank upsell_skus field.
Meaning all the data will be there - but when you are importing that csv - make sure your column name upsell_skus field is blank - no value need to put in it.
so it will update that product and remove that upselll_skus from it.
Hope it helps !
In fact, I have tried that.
This is the csv files just include the columns of sku, store_view_code, upsell_skus, upsell_position
And imported the products with "add/update"
The import was successful, but no any change.
With sku - pass store_code as well !
Also from the import behaviour dropdown = select add/update option
and then try it will works !