Shipping information RB532377110CN

Hello, I shipped something to my country by Chinapost. But, today when i check the tracking information online the china post web page is showing strange movements:

RB532377110CN 2013 收寄局收寄 郑州帐单处理中心 阿根廷 20130905 2055
RB532377110CN 2013 出口总包互封开拆 郑州国际 阿根廷 20130906 1759
RB532377110CN 2013 出口总包互封封发 郑州国际 阿根廷 20130906 2017
RB532377110CN 2013 出口总包直封封发 北京国际 阿根廷 20130909 1012
RB532377110CN 2013 已收到 * 阿根廷 20130910 0000
RB532377110CN 2013 交航 PEK 阿根廷 20130910 0457
RB532377110CN 2013 已收到 MIA 阿根廷 20130915 0000
RB532377110CN 2013 运输路程结束 EZE 阿根廷 20130916 0000
RB532377110CN 2013 启运 MIA 阿根廷 20130916 0000
RB532377110CN 2013 已交付 EZE 阿根廷 20130916 0000

The last 3 movements are the same day and same hour. it seems that it went from Miami (US) to Ezeiza (Argentina) twice.
And the local post is the following:
2013-09-05 20:55 CHINAPOST Receive item from customer (Otb)

So, can you help me understand what this mean? Is there any problem of my parcel? my item number is RB532377110CN.

Thanks!