Certificates implementation in "SSL forward proxy client and server authentication" scenario.

I am trying to implement the scenario explained in the article: http://support.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/ltm-implementations-11-3-0/14.html Under BIP-IP LTM version 11.3.0, File Management : SSL Certificate List, I created a certificate named "test.domain.com" which generated a file. I sent the file to our CA management team and they returned 2 files to me (certtest.cer and certtest.p7b). Then I imported it to BIG-IP and bound it to a client SSL profile. Then I had our CA team generated certificate file containing the backend server's certificate and key which I imported to the BIG-IP and bound it to a server SSL profile. I followed the procedure mentioned in the article, but I get an error connecting to site. Using Google Chrome browser, I get more explanation about the error: Error type: Malformed certificate Objet: backendserver.domain.com Issuer: test.domain.com

I am wandering how certificates should be implemented in such a scenario.

Best regards, Alain