When I was working I was an active creator of Mind Maps. I found that my chosen external software was faithful to the original Mind Map concept and it happened to offer a link to Evernote. But this was nothing more than a link to the map. So clicking on that link opened the map in the native software. The software also provided the option to export a PNG image of the map (to offer a visual view of the map) and keep a link to the master document which I stored in Google Drive (to give quick access to edit the map).