Important amounts of information are circulating in big companies in order to conduct current tactical or strategic operations. Information systems implemented have a life cycle that provides functionality for a long time. However, from time to time current systems run outdated technology, so they must be replaced with others that provide more flexibility and functionality. The challenge is to ensure the transfer of data, information and functionality from an old system to another. The subject of this presentation is to expose a success story in migrating data and information within the company OMV/Petrom, which involved the transfer of information content of the eRoom document management system to SharePoint 2010. We detail the design stages of migration, triggering the process, its performance and the effective closure of the old platform. Each stage has a certain specific technical and managerial course also incidents that were successfully overcome in a project conducted over a year.