Splunk scheduler logs missing for all alerts

[vrmandadi]

We have alerts running and sending an alert to service now or to mail .We did not get the alerts last saturday and sunday and when I went into internal logs and searched for the saved searches events I dont see any events.Below is the search i used.I can see events before and after the weekend but not on saturday and sunday

index=_internal sourcetype=scheduler saved_searchname= *

Any thoughts or did any one ran into these kind of issue

[burwell]

Hello @vrmandadi Can you share the schedule you run the alerts on?

[vrmandadi]

There are multiple alerts running at different times.Some run every 5 minutes ,some every 10 mins,some every 15 mins,some every 30 mins ...etc

[vrmandadi]

Any one had the same issue?