deleting or xlat not configure?

*Hi ! I've got the following chain: client>>>>>proxy>>>>>>Server. When the proxy send back the response of the server(reject message) to the client, it delete the attributes value pair. What can i do to force the proxy not to delete the attributes?* ** In fact, i think the radius proxy doesn't re-copy the attribute value-pair of the radius server on the interface where is connected the client. I thought that it was in the xlat section of the radiusd.conf file but it doesn't work. I have maybe make a bad manipulation? Do you have an idea? Thank you