How can I log the UID in UFW log file permanently?

I have here a debian 10 with installed UFW. I want to know the user or uid of the processes of the connections which are logged by UFW. To log the UID I have add ``--log-uid`` to the log rules in ``/etc/ufw/user.rules``:

    ### LOGGING ###
    -A ufw-after-logging-input -j LOG --log-uid --log-prefix "[UFW BLOCK] " -m limit --limit 3/min --limit-burst 10
    -A ufw-after-logging-output -j LOG --log-uid --log-prefix "[UFW BLOCK] " -m limit --limit 3/min --limit-burst 10
    -A ufw-after-logging-forward -j LOG --log-uid --log-prefix "[UFW BLOCK] " -m limit --limit 3/min --limit-burst 10
    -A ufw-logging-deny -m conntrack --ctstate INVALID -j LOG --log-uid --log-prefix "[UFW AUDIT INVALID] " -m limit --limit 3/min --limit-burst 10
    -A ufw-logging-deny -j LOG --log-uid --log-prefix "[UFW BLOCK] " -m limit --limit 3/min --limit-burst 10
    -A ufw-logging-allow -j LOG --log-uid --log-prefix "[UFW ALLOW] " -m limit --limit 3/min --limit-burst 10
    -I ufw-before-logging-input -j LOG --log-uid --log-prefix "[UFW AUDIT] " -m conntrack --ctstate NEW -m limit --limit 3/min --limit-burst 10
    -I ufw-before-logging-output -j LOG --log-uid --log-prefix "[UFW AUDIT] " -m conntrack --ctstate NEW -m limit --limit 3/min --limit-burst 10
    -I ufw-before-logging-forward -j LOG --log-uid --log-prefix "[UFW AUDIT] " -m conntrack --ctstate NEW -m limit --limit 3/min --limit-burst 10
    ### END LOGGING ###

If I restart ufw (``systemctl restart ufw``) and look into the ``/etc/ufw/user.rules`` my added ``--log-uid`` are still there. But after a while this option will be removed automatically and the UFW log output don't contains the UID. So my question is: What is the correct way to add the ``--log-uid`` permanently?