Equivalent of post_proxy_authorize in FR 2.0.5?

Hi, We are having an issue with inserting dynamic VLAN information in to proxied Access-Accept packets with FR V2.0.5. Local authentications do have VLAN info inserted into the accept packet. In V1.1.7 we use the post_proxy_authorize directive in proxy.conf to re-run authorize to obtain the VLAN information, however this is depreciated in V2. Can someone tell me what method I should use to achieve this for proxied requests in FR V2? Many thanks, Jezz Palmer.