485 转到Transfer to National Benefits Center 是什么意思？

我收到以下的邮件：我EB3, PD 4/2007
大家给看一下这是什么意思？
谢谢


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 September 1, 2009, we transferred this I485 APPLICATION TO REGISTER PERMANENT RESIDENCE OR TO ADJUST STATUS to our NATIONAL BENEFITS CENTER 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 NATIONAL BENEFITS CENTER 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. If you have questions or concerns about your application or the case status results listed above, or if you have not received a decision from USCIS within the current processing time listed*, please contact USCIS Customer Service at [phone].