Do you have to go through immigration at DBX on a connecting UA to LH flight going to Doha. It sounds odd, but when connecting in Doha a couple of years ago, I had to go through immigration in the same terminal I arrived in. I don't know whether this is common in the Middle East. My passport was stolen in Dubai 1.5 years ago, and it was a nightmare getting out of the country. I don't want to have any issues with this connection. Thanks.