DIM settings will always need to be changed depending on the app content. As for installing all Poser content into Poser Pro 2014 Content is entirely up to you. As mentioned in a previous post, too much content in one runtime will lead to runtime bloat which can, and eventually, slow down your library refresh. The Pro: all your content is in one runtime; this minimizes switching runtimes. The Con: runtime bloat, app response, and potential content disorganization. Decide before you commit, organizing a runtime after amassing a huge content collection. It will take you longer to sort the mess than simply deleting and reinstalling everything.

Content Updates in DIM leave at "Respective Installed Paths".