[Kamailio-Users] LCR gateway failthrough..

I'm using the LCR module to send traffic based on just the prefix of the number at the moment. I have two gateway groups, one with a local provider to connect locally, one with a larger one to do international calls (they can also connect locally but with a higher price).. When I call next_gw() will LCR use all possible gateway groups, or just the gateway(s) in the first matching group? The second question is tangential to the first, if it does send the traffic to other gateway group after failing through the first, does it regenerate the RURI, because the local provider wants a numerical prefix on the calls I send, and the other one no (basically do I need to account for this in my config?)