Why do I see fewer visits on Visitor engagement than on Campaign UTM links combined?

Summary

You may see fewer visits in Visitor engagement than in Campaign UTM links because Visitor engagement counts total visits, while UTM links count visits per link—even when the same visitor interacts with multiple links.

Problem

Campaign Details in Analytics shows visit data in multiple places, which can appear inconsistent when comparing totals.

Causes

Cause 1: Different reporting areas display visit data differently

Campaign Details in Analytics shows visit data in a few places including:

• Visits within the Visitor engagement section,
• Visits to individual UTM links within the Traffic segments,

See, Analytics > Campaigns > Campaign Monitor > [Select a campaign]> Campaign Details

Cause 2: Visitor engagement counts total campaign visits

Visitor engagement shows the total number of visits to the campaign pages, whereas Traffic segments show the visits to each of the individual campaign links.

Cause 3: UTM link visits can include multiple visits from the same user

Adding the number of visits to individual UTM links will not equal the total number of visits, as one visitor can visit multiple campaign pages.

Cause 4: One user can generate multiple UTM visits but only one total visit

Example: A visitor Joe, clicks a UTM link on social media that leads to landing page A. He then returns to the social media platform only to click another UTM link (for the same campaign) that leads to landing page B. In this case, we would count one visit for each of the UTM links (two in total), but only one visit in total for the campaign.

Cause 5: Reported totals reflect multi-link engagement within fewer sessions

The screenshots in this article show that Visitor engagements can show 7 visits when the total for the campaign UTM links is 13. This means that some of the 7 visitor sessions visited more than one campaign link.

Resolution / Explanation

This behavior is expected because Visitor engagement measures total visits, while Campaign UTM link metrics count visits to each link individually—even when those visits come from the same session.