@Jennifer_Dungan I found this article which explains why referrer data is being stripped. @robertc6820873 You may read this.
You can try to explicitly implement the following in the Adobe Analytics setup:
s.referrer = document.referrer;
This will help ensure that whenever the browser makes the referrer information available, the value is consistently captured and passed to Adobe Analytics. It is especially useful in cases involving custom implementations, SPA applications, or situations where the referrer value may otherwise not persist correctly across page navigations. However, it is important to note that if Safari itself suppresses or removes the referrer information due to privacy settings, then the browser does not expose that value to JavaScript at all. In such cases, Adobe Analytics cannot capture the referrer because the information is no longer available at the browser level. Therefore, while explicitly setting 's.referrer' can improve consistency and help preserve available referrer values, it cannot fully overcome Safari’s built-in privacy restrictions.