License Question
 

I have 3 vbulletin licenses, all 3.x. I only use one at this time. I want to switch one of the other licenses over to the site that already has vbulletin up because that license is newer and I want to buy the maintenance pack for $30 instead of $50.

What files would I have to overwrite so that license is reflected after I edit the license in my vbulletin account?

I would say all files, best bet is to replace all files with the same exact version, then update if required.