Save your map drawing file often by choosing File > Save from the main menu.
Save As Template
Templates are master documents that, when opened, provide a copy of the file as a new document. Template files can be used over and over again. To save a drawing file as a template for re-use, choose File > Save As from the main menu and enable the Save As Template option.
Next time you open File > New From Template > My Templates you will see your saved template files. If you need to access your template files to rename or back-up the files, they are saved to a special folder located at ~/Library/Application Support/com.mapdiva.ortelius/My Templates, where ~ is your home directory.