Archiving project documentation is an important process to ensure that the project information is stored, retrieved, and updated in a consistent and efficient manner1. It also helps to meet legal requirements, enable long-term analysis, and support new projects and team members1. If the documentation was not archived as per the PMO standards, it would be difficult for the current project manager to find the relevant documents and learn from the previous project. This would cause the current project manager to keep asking questions to the previous project manager, who may not have all the answers or may not be available. Therefore, the most likely cause of this situation is that the documentation was not archived as per the PMO standards. Reference = CompTIA Project+ Study Guide: Exam PK0-005, 3rd Edition, Chapter 14: Closing the Project, page 403; How to Archive a Completed Project: A Guide for PMOs, Introduction and Benefits sections.