Full Answer

Match rates for offline conversion imports typically range from 60 to 85 percent depending on data quality and the matching method used. Google Enhanced Conversions for Leads achieves higher match rates than legacy GCLID matching because it uses hashed first-party identifiers like email addresses that persist across devices and sessions. The primary bottleneck is CRM data quality since misspelled emails, missing phone numbers, and inconsistent formatting all reduce the pool of matchable records before the data even reaches the ad platform. That is the short version. Here is what it means in practice for WooCommerce store owners who rely on this data for budget decisions.

The mechanism behind this change matters because it affects how ad platforms receive the signals they use for optimisation. When the data pathway breaks or changes format, the algorithms that allocate your budget lose the feedback loop they depend on. The result is not just missing reports — it is campaigns optimising against incomplete information, which compounds into wasted spend over weeks and months.

The practical fix is straightforward but not automatic. Store owners need to verify their current integration still delivers data in the format the receiving platform expects. A server-side event pipeline handles this by routing conversion data directly from WooCommerce to each destination in the correct format, independent of browser-side changes. For a deeper look at how this connects to your broader tracking architecture, see Your Organic Traffic Is Down and Direct Traffic Is Up — AI Did Both an.

The stores that act on this quickly preserve their optimisation history. The ones that wait discover the gap weeks later, when campaign performance has already degraded and the missing data cannot be backfilled.