You can export your maps for backup, or in order to migrate to another system. Note that the export only includes your map data. It does not include any TFS work items. If you export a map and then import it into a system that does not contain the work items referenced by the map with the same IDs, the map will not display correctly.
For details on how to import a map, see Importing Maps.
To export a map:
To export all maps at once: