Thanks for reaching out to the Community. I'd be happy to help get your file moved to the new server.
I always recommend doing a backup before starting the process, but after you've installed QB on the new server, you can copy and move the entire QB folder over. If you're going to be sharing the file over the network, once the file has been moved, make sure it's set in multi user mode so more than one person can be in the file at the same time.
Solution 3 in the following article will also outline the steps to move the folder: https://community.intuit.com/articles/1501891 .
I'll be here to help should you run into any problems moving the file over.