If a threat is dismissed, no notification will be sent to the connector.
If the report is about not receiving any threat notifications and there are valid Alert notifications that should have been sent to the connector, open a support case and the support engineer will escalate to Engineering.
If the report is about missing threats from connectors, then the confer-connector.log is required. This is available on the SIEM. There should be a log of downloaded threat incident IDs in the log file. This allows technical support to compare the incident IDs with the Alert screen incident IDs by using the same method as described in third step of Cb Defense: How to Troubleshoot Email Notification Issues
It is also helpful to obtain any custom SIEM reports for relevant and.or specific date ranges from the SIEM.
Once you identify that there is a threat missing that should be in the SIEM or intelligence destination, open a support case and the Technical Support Engineer will escalate to Cb Defense Engineering.