In this paper we discuss several difficulties managing evolving requirements by means of an industrial case study conducted at LogicaCMG. We report on setting up a requirements management system in an outsourcing context and its application in real-life. The experience results in several lessons learned, questions to be answered in the future on how to manage evolving requirements, and solution directions. We propose a conceptual framework of a requirements engineering system tailored for outsourcing environments, which captures the experience results.