The earliest recollection of this bug is traced back to PAN-OS 11.1.3 - July 31, 2026. This bug is fixed in PAN-OS versions 11.1.5. On an NGFW cluster node, the Custom/Pre-defined URL category is not part of the session flow data and a promoted session after failover does not include it. Fixed an issue where, on an NGFW cluster node, the Custom/Pre-defined URL category was not in the session flow data, which caused it to be excluded from the promoted session after a failover. For more information: https://docs.paloaltonetworks.com/pan-os/11-1/pan-os-release-notes/pan-os-11-1-3-known-and-addressed-issues/pan-os-11-1-3-known-issues https://docs.paloaltonetworks.com/pan-os/11-1/pan-os-release-notes/pan-os-11-1-4-known-and-addressed-issues/pan-os-11-1-4-known-issues https://docs.paloaltonetworks.com/pan-os/11-1/pan-os-release-notes/pan-os-11-1-5-known-and-addressed-issues/pan-os-11-1-5-addressed-issues