I'm not familiar with BESR versions. Is this the one that's part of BESR Integration Component, which ties the product into the Symantec Management Console?
I'm assuming that you have BESR installed on the server, and the Symantec Management Platform (SMP), and BESR Integration Component, and CMS.. and that you want to strip this down to just BESR. If you were just demonstrating the capabilities of BESRIC and CMS, you'll use the Symantec Installation Manager (SIM) and uninstall BESRIC, then uninstall the CMS suite, then uninstall the platform.
If you want to save your settings, but you want to be using a different server, you would perform a migration. If you host SQL on-box, you would detach, copy, and reattach the CMDB SQL database on your new server, then configure the platform and solutions (to match exactly your old server) through SIM, using the existing database. If you host SQL off-box, simply connect to it while running SIM on the new server. You'll need to redirect the agents.
Without hearing the details, I'm guessing it would be better to set up an entirely new server, then simply uninstall and leave behind everything but BESR on the old server -- if indeed BESR was installed there.