Configuring and applying complex requirements processes in organisations remains a challenging problem. This paper reports the application of the Map-driven Modular Method Re-engineering approach (MMMR) to a research-based requirements process called RESCUE. RESCUE had evolved in the light of research findings and client requests. The MMMR approach was applied to model the RESCUE process, identify omissions and weaknesses, and to reason about improvements to RESCUE that are currently being implemented. Results have implications for both the scalability and effectiveness of the MMMR approach and for innovative requirements processes such as RESCUE.