The objective of this case study is to understand the context for which process improvement is effective and the challenges of implementing change. In 2015, a major apparel retailer pioneered a value stream mapping project that addressed the order writing process between its merchandising team and an external vendor. This case follows the development and execution of the project and the challenge of sustaining the improvements rendered. Thorough analysis supports the recommendation for continued organizational support, a post-event auditing process, and specific metrics to indicate the project's success.