I build all the Cases, Stages, and Rules in Framework layer and can create cases in framework layer. But the actual work object creation should happen in the implementation layer. What are the steps I should take now to be able to reuse the framework layer rules and be able to create cases in implementation layer. At the moment, there are not any rules to be specialized in implemenation layer.
You can import/extend a framework layer casetype so that all the features/functionality of FW layer can be utilized or you can create a casetype in implementation layer call a flows/rules so that workobject will be created of implementation class.