Iphone syncs contacts outside selected address book group.

[jonnydestination]

Hi All

I created a group on my MacBook Pro's Address Book called "MOBILE"
But before i undestood my iphone, i entered a group of new contacts onto the phone. Apparently if the "MOBILE" group is not selected, the new contacts will be put into "ALL CONTACTS." This is what happened to me

Now here is what i dont understand. When i sync'ed All of the contacts on my iphone went into the Mac's address book, however those entered outside of the "MOBILE" group on the iphone simply went into the general population of the address book. I tested one and found that indeed the sync integrity remains..ie i updated the contact in the address book and, even though it is not in the "MOBILE" group in the Macs Address Book, it updated the the contact on my phone.

So my questions are:
1. How do i understand the iphone's sync methodology?? If some entries are entered outside of the "MOBILE" group on the iphone it still seems to sync those entries - but only those entries - nothing else in the main address book.

2. Is there some way to find these "rogue" contacts if you have a massive address book like mine. I can't visually compare the lists - its just toooooo big. So how does one identify the contacts that continue to sync outside of the "MOBILE" group?