[Serusers] Double autentication

[sendman]

Hi folks!

I have many users logged on my SER proxy, and routing works fine, but
for some destinations, I have to relay the call for another sip proxy.

Well, on the second proxy, my users login doesn't exist, so  I have to
rewrite the username or credentials, before to relay!

I have tried with setuserpass and sethost but doesn't work...

My question is: does this is a normal thing, or I don't have to change
the username from sip message?


Regards.