Hello, I am not certain what you mean by whether it is compatible or not but you can always test out the updated version in your Dev environment and if it doesn't have the features you desire then you can downgrade it once again. The downgrade can be done in Marketplace > Search for 'content pack name' > Version History > And select the version you wish to return to.
Feel free to look at the attached screenshot for more information.
Also, this integration has been deprecated so I recommend you switch to the new one, Cisco Security Management Appliance: https://xsoar.pan.dev/docs/reference/integrations/cisco-email-security#configure-ciscoemailsecurity-...
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