The lumia storage check beta was a quite good app with also a nice visual. this is definitely an important issue not to be able to move map on SD card. I have given my 1320 to my wife when I bought the 1520 and I have only installed the UK map. when we went to Portugal I have install the Portugal map but when we came back I have to uninstall to free the memory (only 8gb internal) and she only got 2.2gb left + the xternal SD card. I have tried different way to see If I can move the map on SD card, but every time I did it the map was not recognized ?!?! typically windows life issue because this remember me the compatibility or other issue I could have with my laptop, obviously not quite the same (bluetooh connection, widi compatibility, connection between my laptop and my windows mobile => this is a good one lol
, etc;....)
unfortunately I am not expected any progress on the map issue by tomorrow because the issue has been kindly highlighted now for few months and nothing has happened.
To be a little be more positive now, Did you tried here map on your Laptop and PC?, quite interesting because you can see all your favorite.