> ## Documentation Index
> Fetch the complete documentation index at: https://moengage.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Why Do Periodic Child Campaigns Have Higher Stat Counts Compared to Periodic Parent Campaigns?

> Periodic parent campaigns in MoEngage may show lower stats than child campaigns when variations are removed. Learn how metric aggregation works here.

## Problem

There are lower impressions or clicks (stats) on the periodic parent campaigns compared to periodic child campaigns.

## Explanation

* The product expects the periodic parent campaign metrics to be similar to the combined counts of all the periodic child campaigns.
* However, the periodic parent campaign sometimes has a lower count due to the removal of existing variations.

## Example

* For instance, when a campaign is set to send daily, and variations are added and removed on specific days, the periodic child campaigns created during those days will display the variations.
* However, the periodic parent campaign will not display or record stats for the variations that have been removed on those specific days.