Problem summary
Your Google Analytics 4 (GA4) event values can be missing or lower than expected when your data source includes the New Users metric.
Error message or symptoms
Some Event name values are missing.
Event metrics are lower than expected.
The missing values return when you remove New Users.
When does this occur
The data source requests event-level dimensions or metrics.
The same request includes the New Users metric.
Root cause
The New Users metric can filter out event types that do not apply to new users. The Analytics Data API then omits those event values from the response.
Solution
Edit the GA4 data source configuration.
Remove New Users from the data source that imports event data.
If you need New Users, create a separate data source for that metric.
Verify that the missing event values appear after the import finishes.