1. Double click on the Blackberry Manager on your BES Server
2. Make sure you are on global
3. Click on Account under task
4. Click License Management
5. Rick Click on the license that you want and click copy
6. Create a notepad file and paste the license key in it.
7. Install the new Bes server.
8. Repeat step 1 to 4 on the new Bes Server
9. Type in the BES license from the notepad text file into the new BES
10. Click add license
11. When every thing is working, remove the license on the old BES.
Good luck!