我们的情况是：Eb1b-140，pending已13个月，无RFE；485晚递十几天，也是pending差不多13个月。如今叫人望眼欲穿的140石沉大海杳无音讯，485却横插一杠子，完全让我糊涂掉了。求pjiang、xiaobaitu指点迷津：
1、Field Office就是大家所说的Local吗？与Service Center有啥区别呢？
2、被转到Field Office就是要面试吗？是否可能有别的原因？
3、要求面试的原因大概有什么？我冥思苦想也找不出蛛丝马迹有必要让IO亲自会见咱。
4、我们住在Arizona，485转到MIAMI正常吗？如果面试不会是要去MIAMI吧？乖乖，USCIS不会这么别出心裁推陈出新地为美国旅游、航空业创收吧？！
5、140还没批呢，485这么大动静是为啥？跟140有关系吗？
恳请大侠们不吝赐教！拜谢！！！
附移民局网上LUD原文：
The last processing action taken on your case
Application Type: I485 , APPLICATION TO REGISTER PERMANENT RESIDENCE OR TO ADJUST STATUS
Current Status: This case has been sent to another office for processing because it has jurisdiction over the case.
On August 25, 2008, we transferred this I485 APPLICATION TO REGISTER PERMANENT RESIDENCE OR TO ADJUST STATUS to our MIAMI, FL location for processing because they now have jurisdiction over the case. We sent you a notice of this transfer. Please follow any instructions on this notice. You will be notified by mail when a decision is made, or if the office needs something from you. If you move while this case is pending, call customer service. We process cases in the order we receive them. You can use our processing dates to estimate when this case will be done. This case has been sent to our MIAMI, FL location. Follow the link below to check processing dates. You can also receive automatic e-mail updates as we process your case. Just follow the link below to register.