Don't waste your time installing two versions, just open the file in offline mode, convert it to v9, the original is not modified. The only difference between V8 and V9 is that all licenses are released, you don't have access to the list of active licenses in offline mode anyway. If it's to change something in the program, you might as well switch the system to V9, there's no risk, I did it for more than 100 NS, remotely