WooCommerce Add-to-Cart as Primary Conversion Pollutes Smart Bidding
Google’s updated Conversion Goals documentation confirms secondary conversions can enhance algorithm predictions without influencing bids directly. Yet most WooCommerce tracking plugins set add_to_cart and begin_checkout as primary conversion actions alongside purchase by default. When Smart Bidding treats micro-conversions as equal optimization targets, it chases the easiest win — cart additions, not completed orders. The fix: set purchase as the only primary conversion action and demote all funnel steps to secondary.