Chili Piper can capture UTM parameters from the current page URL, but it can't read UTM values stored in a visitor's cookie. When a lead was originally cookied with UTM data on an earlier visit and that data isn't present in the URL at submission time, the original attribution is lost.

Chili Piper should support reading UTM parameters from cookies (e.g. the first-touch UTM the visitor was cookied with) and writing them to the mapped lead and contact fields, alongside the existing URL-parameter capture.

Cookie-based capture is more accurate than URL parameters because it preserves the original campaign source even when the lead converts on a later, untagged pageview. Without it, teams relying on UTM for attribution under-credit the campaigns that actually drove the lead.