The GP client should downgrade automatically without prompting the user to downgrade the client in transparent mode. It is back end process that happens silently without interrupting the operations of the VPN user. Can you be more elaborate on how you tested the downgrade ?
Looking at the timestamp of this 'not closed or archived' thread. I confirm this is (still) not working after 8 years. The clients do not downgrade automatically to the activated version on the firewall in transparant mode. In interactive mode users will offered a pop-up.
I assume the OP never filed a feature request or it never got through. Can anyone from PA verify/confirm this ?
Tested on Pan-OS 9.1 and GP 5.2.4.
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