The earliest recollection of this bug is traced back to PAN-OS 8.1.6 - July 22, 2025. This bug is fixed in PAN-OS versions 8.1.6. Fixed an issue where a Delete PDP Context Response ( Monitor Logs GTP ) did not correlate with a Delete PDP Context Request and appeared as a new session. For more information: https://docs.paloaltonetworks.com/pan-os/8-1/pan-os-release-notes/pan-os-8-1-addressed-issues/pan-os-8-1-6-addressed-issues