The earliest recollection of this bug is traced back to PAN-OS 11.0.0 - July 29, 2024. This bug is fixed in PAN-OS versions 9.1.18. On the Panorama management server, Context Switch fails when you try to Context Switch from a managed firewall running PAN-OS 10.1.7 or earlier release back to Panorama and the following error is displayed: Could not find start token '@start@' Fixed an issue on Panorama where, when you attempted to context switch from a managed firewall on PAN-OS 10.1.7 or an earlier release back to Panorama, the context switch failed with the following error message: Could not find start token '@start@ . For more information: https://docs.paloaltonetworks.com/pan-os/11-0/pan-os-release-notes/pan-os-11-0-0-known-and-addressed-issues/pan-os-11-0-0-known-issues https://docs.paloaltonetworks.com/pan-os/11-0/pan-os-release-notes/pan-os-11-0-1-known-and-addressed-issues/pan-os-11-0-1-known-issues https://docs.paloaltonetworks.com/pan-os/11-0/pan-os-release-notes/pan-os-11-0-2-known-and-addressed-issues/pan-os-11-0-2-known-issues https://docs.paloaltonetworks.com/pan-os/11-0/pan-os-release-notes/pan-os-11-0-3-known-and-addressed-issues/pan-os-11-0-3-known-issues https://docs.paloaltonetworks.com/pan-os/11-0/pan-os-release-notes/pan-os-11-0-4-known-and-addressed-issues/pan-os-11-0-4-known-issues https://docs.paloaltonetworks.com/pan-os/11-0/pan-os-release-notes/pan-os-11-0-6-known-and-addressed-issues/pan-os-11-0-6-known-issues https://docs.paloaltonetworks.com/pan-os/9-1/pan-os-release-notes/pan-os-9-1-addressed-issues/pan-os-9-1-18-addressed-issues