Hi Guy,
This is how I solved my universe folder problem in linked universes using the CORE_ORDER_PRIORITY parameter.
I had some objects (in a folder/class) specific to the linked universe which was at the bottom of the list of folders/classes that needed to move up.
I set the parameter to 'Yes' and refreshed the folder structure and then I cleared the parameter so that I could move the folder to its required position.
Hope this helps
Thank you
Gerrie