We are planning to integrate our instances of CA PPM and CA Agile Central next year. From reading the documentation, the CA PPM task maps to your lowest-level portfolio item, but it looks like you can map the CA PPM project to any of the other levels of portfolio item in your CA Agile Central instance. We currently have three levels of portfolio items, and are considering a fourth. We are a large organization with multiple (more than 10) distinct portfolios each with multiple agile release trains. I'd love to hear how other large organizations manage this integration, and to which level they connect their CA PPM projects.