attribute filter prior to prxy

Hello, I want to remove all attributes from packets to proxy except some of them i do say are allowed... I thought the following would do the job in the pre-proxy section, but when i check what the freeradius proxies (using tcpdump) i see the filter.... just filters nothing DEFAULT Acct-Status-Type =* ANY, User-Name =* ANY, Framed-IP-Address =* ANY, Qos-Policy-Metering =* ANY, Ip_Address_Pool_Name =* ANY, Class =* ANY