Click and campaign attribution from the landing-page snippet (for example GCLID, GBRAID, WBRAID, and related UTM fields) could be captured on the visit but not written as system tags on the call.

Outbound webhooks that reference those tags could fire without the expected click IDs and attribution values.

Trusted landing-page attribution is written again through the system-tag path so those values are available on the call.

Outbound webhook placeholders for those tags resolve with the captured values.

Customer-controlled URL parameters still cannot overwrite reserved system tags.

New calls after this release should again send landing-page attribution (including GCLID and related click IDs) on outbound webhooks when the snippet collected them.