Question
I operate mobile and need a way to register hundreds of different QTHes

Answer
At present, this is not easy. If you want your eQSLs to be valid for eAwards, you must set up a new account for each QTH. The quickest way of doing this is the My Accounts screen. Simply add a new attached account and all QTH information will be copied over to the new account. Then modify what is different, and make sure to upload only the correct logs into each new account. We are working on a much better solution, so watch Site News if you are a County Hunter or other highly mobile station.

Отсюда.

Создай новый присоединенный экаунт для каждого QTH. Присоединенные экаунты должны различаться по времени. Потом импортируешь ADIF по кускам для каждого. Лично не проверял, но должно сработать.