I'm doing some Calling Number and Called Number normalization at the beggining and end of the Kamailio. At the end, i'm doing it in the Dispatch Route.

In order to change the numbers, i use uac_replace_to() and uac_replace_from(). However, i don't have a function like this for the R-URI username. I'm trying to change the $rU variable, but i can't apply changes since i get this error from msg_apply_changes() :  "cannot apply msg changes after adding record-route header - it breaks conditional 2nd header"

Is there any other way to do this operation? 

Thanks in advance.

Cheers