Instead of overwritting, use the local edit option.To make a local copy of a feature service for editing, refer to the following ArcGIS Help document: <a href="http://desktop.arcgis.com/en/desktop/latest/manage-data/editing-fundamentals/making-a-local-copy-of-a-service-for-editing.htm" target="_blank">http://desktop.arcgis.com/en/desktop/latest/manage-data/editing-fundamentals/making-a-local-copy-of-a-service-for-editing.htm</a>To synchronize local edits with the server, refer to the following ArcGIS Help document: <a href="http://desktop.arcgis.com/en/desktop/latest/manage-data/editing-fundamentals/synchronizing-local-edits-with-the-server.htm" target="_blank">http://desktop.arcgis.com/en/desktop/latest/manage-data/editing-fundamentals/synchronizing-local-edits-with-the-server.htm</a>