Not able to overwrite pki/config/ca

Hi Team,

I have intermediate CA setup and now I want to overwrite existing cert with new one.

I have private key, cert and ca_chain everything in placed .pem file and write it to vualt is sucessful.

#vault write pki/config/ca pem_bundle=@test.pem

But after all this process I see new cert is not implimented. am i missing anything ?