"Microsoft Mobile Services Protocol" Problem

Question

 Hello everyone.  4 days ago, I checked my email accounts on my 9780 under Email Setup.  On my primary email address, a  "@msn.com"  address, I noticed a new feature I had never seen or heard of before, called "Switch to Microsoft Mobile Services Protocol".  I did a few minutes of research on what it was (it was suppose to convert my msn email from POP to IMAP, which would have been excellent...)  and I then activated in from my phone.  A few hours later and I realize that email address is not receiving new email, so I do the logical thing, and I delete the email address from Email Setup.  Then, I try to create a new email account using the same @msn.com email address, and the system wont let me.  Every time I do it from the phone, it gives me a error message saying "Update Failed".  I have also tried to create the new email address from BIS online, and it also will not allow me to create a new email account for that specific email address.
I have verified that I can create  new email accounts with other addresses, including other @msn.com addresses, but I just can not create one using my old (and most important) address that I had switched to Microsoft Mobile Services Protocol, and then deleted.
Does anyone know how I go about fixing this problem?
Many Thanks.

Answer 1

Ok, Problem resolved, but not with out LOTS of time, work and aggravation.
I started on the phone with AT&T, and they gave up after 30 minutes (though they were extremely polite...).  AT&T then transferred me to RIM, and I ended up with a nice tech in Canada.  Tech #1 went through all kinds of tests and could not fix the issue. AND - I did have to give him my password so he could try to setup my email account himself.  He then transferred me to Tech#2, who was very knowledgeable, and fully understood my problem though he did not known how to fix it.  We managed to get my MSN email address working as POP, but I told him that before I switched to MMSP, my MSN account was not POP, in so much as email to that address did arrive in realtime.  He understood me, and we both keep trying and finally, he gave up, and said it would have to go to the main techs, who essentially work on the BB/RIM servers/backend.  He promised me it would be setup in 48 hrs.  So after nothing happened with in 48 hrs, I tried re-setting up my msn email myself, and it fully and completely works.
AND - as an added bonus, RIM must have slightly updated BIS, becuase now the Hotmail Contacts Sync actually works.  YES, on my BB 9780, I am 100% syncing my MSN (Hotmail) contacts wirelessly.
So, to make a long story short, DONT SELECT "Switch to Microsoft Mobile Services Protocol"!!! If you do, and you email no longer works, you are going to have to speak with RIM, although you will need to call your carrier first and have them transfer you to RIM, so that way RIM will have your BB's PIN and can see exactly whats going on with your phone.