How do cityXplorer maps work with the preloaded City Navigator map on my device?

With cityXplorer maps the latest map detail and POIs are able to be downloaded for specific metropolitan areas. Also with cityXplorer maps, enhanced pedestrian navigation is available when loaded to specific GPS models. Once a cityXplorer map has been downloaded to the GPS unit or SD Card, different configurations between the unit and the preloaded City Navigator map will determine how the cityXplorer map will work with the preloaded City Navigator map.

The following will occur when the cityXplorer map coverage is for a different location that is not covered by the preloaded City Navigator map (ex. cityXplorer Paris purchased with city Navigator North America preloaded):

https://support.garmin.com/support/searchSupport/case.faces?caseId={94b4c550-0a19-11e0-639d-000000000000}