the reality is that there is a debug file (as you can see from the image).
Look at the image carefully and notice the text "No debug log found", this means you have not enabled the logging.
in your opinion, to change the discount, it is sufficient to change id_discount or even the field product_discount?
You will need a lot more because CSVI needs to find out for which price you want to change the discount ID.
You could do a price export with the fields virtuemart_product_price_id, product_sku, product_discount_id. Modify this file by updating the product_discount_id where needed. Now you have your import file.
Create a new import template of the type CSVI -> Custom table and select the table virtuemart_product_prices and set the Use file for configuration to Yes. If you run this import, it should update the discount IDs to what you want them to be.
Kind regards,
RolandD
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