New legs can be added at any time to a Google Map route through the Import Route option selected from the upper left menu. The ID number provided when the route was saved should be entered in the Import Route dialogue window.

The import map route dialogue window

The route is opened in the same map style used at the time of saving - in the example below as a Terrain Map.

Route 181 opened as a Terrain Map

To switch to another map style, click the 'Hide Compass' button and then select from the map menu which will appear in the upper right.

Select from the map menu in the upper right

The aerial map option can be selected and clicking the 'Show Compass' button will return the compass to its last position. New route legs can then be added.

The 'Show Compass' button will return the compass to its last position

If the imported route was originally saved in full screen mode, then it must be opened in the same mode. An attempt to open it in small screen mode will display an error message: Route ID #*** was saved in full screen mode, please close this form then click 'Maximize This Map' button and import the route from there.

Import Route small screen mode error message