Accuracy of data is fundamental for calculations/optimizations and consequently for all control actions. In order to maximize the benefits, detailed data model processing has to be managed by the DMS. The mechanism which is used for promoting GIS data to DMS utilizes an incremental process provided by GIS Adapter. This presentation details some of the work done at Duke (Progress Energy Carolinas) regarding preparation of an accurate DMS data model. We will highlight experiences as well as possibilities for further improvements to this maintenance task.