I have a BCM400 3.6 that I had to replace the hard drive and power supply on a couple of months ago. Last week the customer's PRI dropped. This caused the system to reboot (not sure why), the voicemail didn't sync up and all the destination codes disappeared. I rebooted it to get voicemail back. I had to reprogram the destination codes. None of the routes were affected, they were all still there. No other programming seemed to be missing. Has anyone seen this happen and if so have any idea what might have caused it? Have been trying to get them to upgrade but so far they aren't willing to.