Current;y we're running 10.1 with near future aspirations to update to 10.2. We're not doing anything real sophisticated with our material files but we do keep and manage them in Windchill. The .mtl files reside in our standards library in a Material folder. This library folder only permits Admins to write to with read only for all other Windchill Users. We have the pdm library path then in our config.pro files. As I'm sure you know this means all users must be running a "linked' Creo session and if they go "off line" for any reasonsthen they'll not have access to any server side actions.
We have those as Document managed in Windchill. They are not unique document types.
Do you have any information that you can share? I have some questions.
I'm sure there are other questions, but this will do for a start.
David, see my answers for few questions: