Resource alert is not picking up all the pending actions assigned to an employee

Summary:

We are using the pending actions resource alert. Client has recently triggered a life event to complete a pending actions audit. Dependent Certification pending actions have been triggered on over 700 employees.

When we run the pending actions alert simulation on all employees with the suggested filters, only the pending actions that were previously there are included in the alert notification - i.e. designate beneficiary.

Full population Alert filters:

I added a filter to only pull in one employee who has both kind of alerts, the new certification alert, as well as the designate dependent, and simulated that run, and the pending action triggered correctly for this person. Why, when I run for the whole population, are the only alerts that are populating are the Designate Beneficiary, and not all alert types, when the certification alerts and designation alerts are triggering when running the resource alert on one person?