[Freeswitch-users] Bridge to gateway with prefix alters Destination number

I have one funny challenging problem and do not know how to solve it. I am bridging call to gateway and provider requires that I add prefix. For example: }sofia/gateway/myprovider/aa15551231234 This is everything ok and it works, but then I get update display on softphone from 5551231234 to aa15551231234 and in call logs I get same number: aa15551231234. And then it looks like user dialed aa15551231234 . How to tell freeswitch not to update display and call log? I tried with ignore_update_display, but with no luck. Best regards, Gregor