If your annotation data is currently stored as Text or MText, you can convert it to an FDO text layer. A text layer is stored as a separate data store, which you can reuse in multiple maps.
To convert text objects to a text layer
— Click .
to go to the map where you can choose each text object to convert. Press Enter when you are finished to return to the dialog box. Clicking the button automatically enables Select Manually. If you specify a new feature class name, AutoCAD Map 3D toolset will create a new file-based data store for the text. You can store the text layer as an SDF or SQLite file. You can connect to this feature store from any map.