Renderholic - I basically have used the same library for years. I just change the name of it to mirror the new version. Basically I do  what you read in the Eon Forum. If there are a number of new items I copy them in from the new content, especially scenes. Since with Infinite there has not been much new for the past few versions, I am not too concerned. I always keep a copy of the library I am presently using on an external drive just incase something happens.