EPP certification for proof of recycled content?

Has anybody ever had an issue with using an EPP certified product to gain recycled content for a project? If I'm understanding it correctly, to be EPP certified it requires use of 100% recycled or recovered wood fiber. My issue is the definition of "recovered wood fiber" and if this still fulfills the definition of pre-consumer recycled content. Uniboard Nu Green 2 MDF board is EPP certified, and wondered if it would be an issue if used on our project if the spec has required a minimum pre/post consumer recycled content.