Note that merging new data into already existing product data means that old data is overwritten. If you wish to maintain any existing data, they need to be in the document to be merged.
For example, a teashop has a two categories,
tea. The store owner now wants to add a new category
Green Tea to all her green teas, while still maintaining the original category
Tea. To accomplish this, the CSV file needs to specify the
tax:product_cat to be
Tea | Green Tea.
If she wanted to completely change the category from
Green Tea, then the file would only specify
- Go to: WooCommerce > CSV Import Suite; and click Merge Products or Merge Variations.
- Select your CSV, and click Upload file and import.