Ok. So I'm starting to get into this now
I think a combination of the re-format of the card and re-inserting it into the Zumo has linked it to the menu. Or, of course, it might have been me!
After having a good old play about with it I can now Send a route to the memory card, and Import it onto the device memory for use!
What is definite is that a new route on the memory card does not flag up on the Zumo UI when you power it up. But if you send to the device memory it does. The same applies to Way Points.
Now none of this is in the user Manual that I have printed off (on A3) and there is no reference to Importing data to the Zumo 365.
So in order to add to the group knowledge and maybe stop just one other person having the same issues as I have I will add some more info.
OK so we start here at the Home Screen
Open Trip Planner
Then Open the Sub Menu using the Icon in the top left hand side that looks like 3 horizontal bars.
Going to have to add another post as it seems I have run out of space on this one