There is no “it” moving about. It is an ever changing process of an aggregate. When we die it is not only “one” body died. It is a complex aggregate changed to some thing else. This process is in force while I am writing this and the time you reading it. By the time you read this reply, I have changed to some thing else!
The following article may some help http://www.accesstoinsight.org/lib/auth ... el102.html