BB Curve :: 8530 OS Upgrade Lost Contacts?

I received an email message from Blackberry inviting me to upgrade my OS to 5.0.0.1, which I did wirelessly.At the end of the process, after the restart, I got a message that said "uncaught exception ....I pulled the battery and tried again a few times, but I kept getting the same message.I Goggled the error message and to my horror found hundreds of listing - most related to corruption errors!However, since my blackberry home screen appeared under the message warning, and it is supposedly a mission critical device and I need to work, I clicked ok and started to use my device again.

All seemed find until I noticed that some of my contacts were missing.Maybe about 10%. I determined that some of these missing contacts had been updated since my last back-up. Others had been on my BB for years.I decided to try and restore the address book from my last back-up.I launched my Desktop Manager 6.0.2 and tethered my Curve.First I backed up the "damaged contact list" as part of a full back up.All went well.Then I went to use a 2 week only back up file, that I made before the OS upgrade. But the address book field was dimmed. There were 4036 entries on the dimmed back up file. I had 4021 on my Curve, but many more than 15 were missing. Regardless, I couldn't restore because:

(Dimmed entries are data types that are read only . . . . )The only solutions to this problem I found via Google related to older OSes and devices and involved deleting service book entries which look nothing like the service book entries I found. Or, is simply a problem related to running a RIM application on a RIM device after an upgrade to one more "advanced" RIM OS from another RIM OS, at RIM's recommendation?