Competitors should be selected in the Family Type Filter, and in the upload popup the Competitor radio button should be selected or else the competitor SKUs you are trying to upload will be added as company SKUs.
Select the Competitor in the first filter Family Type option and press apply to refresh results.
Click the Import button.
Click Add from the dropdown.
Download the import template.
Edit the required info on the excel template.
Click the Browse button, locate and select the updated template sheet.
To edit competitor SKUs in bulk, please refer to Adding Competitor SKUs in Bulk section, but instead of selecting Add from the import button dropdown, select Update.