Hi, i can help you with your project quick and easy, i'm Cisco Certified and have a lot of experience with Voice over IP in both UC540 and Asterisk, i have some clients like Call Center, Travel Agency, Service Enterprise, and so on, i can do what you're asking, move your current Asterisk installation to a new server is and easy task if you give me all needed access.
I'll be waiting for your reply, i can start immediatly.
Best Regards!