I was not able to reproduce your symptoms, but I also don't have two gateways to test with right now. However, I'm wondering if possibly you are starting the uuid_record too quickly. Try doing the uuid_transfer without the bgapi and then doing the uuid_record. I'm curious to see what happens.

For the record, I used your exact syntax, including uuids. The only difference is that I used a pair of locally registered phones and did "user/1001" and "user/1003" for my dialstrings.
-MC