Not that I am looking a gift horse in the mouth but I was wondering if anyone could shed a light on how this happened.

My company had a full blown BES. We had to get rid of it because we were downgrading our data plan with AT&T.

Uninstalled BES, removed DB. Installed BESx. Now according to Blackberry I was going to need to wipe each phone and then reactivate it on the new BESx server. Before I started wiping all the phones, I added all the users to the BESx.

I then proceeded to wipe a couple of the phones and activate them, which worked fine, but as I was working on those I noticed all the other phones at my desk started receiving email(s). I checked the BESx console and sure enough these phone that I didn't wipe were now working with the BESx!!

So somehow these phones auto migrated to the new server.

Another weird happening: The plan we moved to said OTA wasn't possible with BESx but it worked just fine. Must have been my lucky day

I ran into the same thing between 2 BES, old 4.1 and a new 5.0 on 2 separate DB's!!

I was calling individual users who were on the 4.1, wiping and reactivating on the 5.0 until I started seeing their accounts magically fill in the blanks and activate on the 5.0 server.

According to RIM, this and your issue are not possible, yet it's WORKING.

Yeah, A&TT and RIM both said it wasn't possible. I'm just curious as to if the phones that auto migrated are going to stop working at some point

Mine have been working for a few months now..