I have been working out a procedure that I do for the upgrades and to maintain my local runtimes. I know there are tools that are Poser aware that will help manage content but right now I am just using something I am familiar with. I'm running on Windows 10. I use a file and folder compare tool called WinMerge. I install Poser and the content runtimes into new folders. Then I do a folder compare and bring forward any content from prior runtimes that I want to keep. This also allows me to see what changes were made, which files were added by the recent updates.